{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2025-12-14T01:33:56.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2025-12-14T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":1833,"title":"Usage of java.math : Add, Multiply, Pow","description":"This challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations.  The primary reference sites are \u003chttp://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Number.html Java Math\u003e, \u003chttp://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html Java BigDecimal\u003e, and \u003chttp://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigInteger.html Java BigInteger\u003e.\r\n\r\nThe usage of BigDecimal functions add, multiply, and pow will be tested.\r\n\r\nJava Math tutorial: (Simplified summary that is believed correct)\r\n\r\n  vd-decimal value, vstr-string, vi-integer value \r\n  xBD=java.math.BigDecimal(vd);  % valid vd,vstr,vi creates xBD a BigDecimal variable\r\n  import java.math.*;  % simplifies statements\r\n  xBD=BigDecimal(vstr);\r\n  x2pwrBD=xBD.pow(vi); % Invalid: vd,vstr,BD\r\n  xplusyBD=xBD.add(BigDecimal(y)); % add input requires BD type\r\n  xmultiplyzBD=xBD.multiply(BigDecimal(z));  % multiply input requires BD type\r\n  \r\n  To convert java to string of unlimited length can be achieved via java toString or Matlab char\r\n  \r\n  xstr=toString(xBD)  or xstr=char(xBD) \r\n\r\n*Input:* X,Y, function_case  [X,Y double or str, function 1:X+Y, 2:X*Y, 3: X^Y(double)\r\n\r\n*Output:* z  (char variable)\r\n\r\n*Future Challenges:*\r\n\r\n  1. nchoosek_large (full precision)\r\n  2. Next Prime\r\n  3. factor_large\r\n\r\n4. \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1854-factorial-unlimited-size-java-math Factorial\u003e","description_html":"\u003cp\u003eThis challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations.  The primary reference sites are \u003ca href = \"http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Number.html\"\u003eJava Math\u003c/a\u003e, \u003ca href = \"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html\"\u003eJava BigDecimal\u003c/a\u003e, and \u003ca href = \"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigInteger.html\"\u003eJava BigInteger\u003c/a\u003e.\u003c/p\u003e\u003cp\u003eThe usage of BigDecimal functions add, multiply, and pow will be tested.\u003c/p\u003e\u003cp\u003eJava Math tutorial: (Simplified summary that is believed correct)\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003evd-decimal value, vstr-string, vi-integer value \r\nxBD=java.math.BigDecimal(vd);  % valid vd,vstr,vi creates xBD a BigDecimal variable\r\nimport java.math.*;  % simplifies statements\r\nxBD=BigDecimal(vstr);\r\nx2pwrBD=xBD.pow(vi); % Invalid: vd,vstr,BD\r\nxplusyBD=xBD.add(BigDecimal(y)); % add input requires BD type\r\nxmultiplyzBD=xBD.multiply(BigDecimal(z));  % multiply input requires BD type\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eTo convert java to string of unlimited length can be achieved via java toString or Matlab char\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003exstr=toString(xBD)  or xstr=char(xBD) \r\n\u003c/pre\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e X,Y, function_case  [X,Y double or str, function 1:X+Y, 2:X*Y, 3: X^Y(double)\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e z  (char variable)\u003c/p\u003e\u003cp\u003e\u003cb\u003eFuture Challenges:\u003c/b\u003e\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003e1. nchoosek_large (full precision)\r\n2. Next Prime\r\n3. factor_large\r\n\u003c/pre\u003e\u003cp\u003e4. \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1854-factorial-unlimited-size-java-math\"\u003eFactorial\u003c/a\u003e\u003c/p\u003e","function_template":"function zstr=java_math(x,y,select)\r\n import java.math.*\r\n\r\n switch select\r\n    case 1 % add x+y\r\n     zBD=x+y;\r\n    case 2 % multiply  x*y\r\n     zBD=x*y;\r\n    case 3 % power  x^y\r\n     zBD=x^y;\r\n     \r\n end\r\n zstr=char(zBD);\r\n\r\nend","test_suite":"%%\r\nx=2;\r\ny=64;\r\n% power\r\nzstr=java_math(x,y,3);\r\nassert(strcmp(zstr,'18446744073709551616'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nxstr='18446744073709551615';\r\ny=3;\r\n%Add\r\nzstr=java_math(xstr,y,1);\r\nassert(strcmp(zstr,'18446744073709551618'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nx=2^53;  % largest eps==1 double\r\ny=2^11;\r\n%Multiply\r\nzstr=java_math(x,y,2);\r\nassert(strcmp(zstr,'18446744073709551616'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nx=2^53;  % largest valid double\r\ny=2^12;\r\n% Multiply\r\nzstr=java_math(x,y,2);\r\nassert(strcmp(zstr,'36893488147419103232'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nx=randi(10);\r\ny=randi(100);\r\nzstr=java_math(x,y,1);\r\nassert(strcmp(zstr,num2str(x+y)),sprintf('x=%2i y=%3i x+y=%5i zstr=%s\\n',x,y,x+y,zstr))\r\n%%\r\nx=randi(10);\r\ny=randi(100);\r\nzstr=java_math(x,y,2);\r\nassert(strcmp(zstr,num2str(x*y)),sprintf('x=%2i y=%3i x*y=%5i zstr=%s\\n',x,y,x*y,zstr))\r\n%%\r\nx=randi(20);\r\ny=randi(5);\r\nzstr=java_math(x,y,3);\r\nassert(strcmp(zstr,num2str(x^y)),sprintf('x=%2i y=%3i x^y=%8i zstr=%s\\n',x,y,x^y,zstr))\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":4,"comments_count":3,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":37,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2013-08-18T17:42:26.000Z","updated_at":"2025-12-10T01:06:03.000Z","published_at":"2013-08-18T19:02:27.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThis challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations. The primary reference sites are\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Number.html\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eJava Math\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e,\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eJava BigDecimal\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e, and\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigInteger.html\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eJava BigInteger\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe usage of BigDecimal functions add, multiply, and pow will be tested.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eJava Math tutorial: (Simplified summary that is believed correct)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[vd-decimal value, vstr-string, vi-integer value \\nxBD=java.math.BigDecimal(vd);  % valid vd,vstr,vi creates xBD a BigDecimal variable\\nimport java.math.*;  % simplifies statements\\nxBD=BigDecimal(vstr);\\nx2pwrBD=xBD.pow(vi); % Invalid: vd,vstr,BD\\nxplusyBD=xBD.add(BigDecimal(y)); % add input requires BD type\\nxmultiplyzBD=xBD.multiply(BigDecimal(z));  % multiply input requires BD type\\n\\nTo convert java to string of unlimited length can be achieved via java toString or Matlab char\\n\\nxstr=toString(xBD)  or xstr=char(xBD)]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e X,Y, function_case [X,Y double or str, function 1:X+Y, 2:X*Y, 3: X^Y(double)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e z (char variable)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eFuture Challenges:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[1. nchoosek_large (full precision)\\n2. Next Prime\\n3. factor_large]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e4.\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1854-factorial-unlimited-size-java-math\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eFactorial\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"errors":[],"problems":[{"id":1833,"title":"Usage of java.math : Add, Multiply, Pow","description":"This challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations.  The primary reference sites are \u003chttp://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Number.html Java Math\u003e, \u003chttp://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html Java BigDecimal\u003e, and \u003chttp://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigInteger.html Java BigInteger\u003e.\r\n\r\nThe usage of BigDecimal functions add, multiply, and pow will be tested.\r\n\r\nJava Math tutorial: (Simplified summary that is believed correct)\r\n\r\n  vd-decimal value, vstr-string, vi-integer value \r\n  xBD=java.math.BigDecimal(vd);  % valid vd,vstr,vi creates xBD a BigDecimal variable\r\n  import java.math.*;  % simplifies statements\r\n  xBD=BigDecimal(vstr);\r\n  x2pwrBD=xBD.pow(vi); % Invalid: vd,vstr,BD\r\n  xplusyBD=xBD.add(BigDecimal(y)); % add input requires BD type\r\n  xmultiplyzBD=xBD.multiply(BigDecimal(z));  % multiply input requires BD type\r\n  \r\n  To convert java to string of unlimited length can be achieved via java toString or Matlab char\r\n  \r\n  xstr=toString(xBD)  or xstr=char(xBD) \r\n\r\n*Input:* X,Y, function_case  [X,Y double or str, function 1:X+Y, 2:X*Y, 3: X^Y(double)\r\n\r\n*Output:* z  (char variable)\r\n\r\n*Future Challenges:*\r\n\r\n  1. nchoosek_large (full precision)\r\n  2. Next Prime\r\n  3. factor_large\r\n\r\n4. \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1854-factorial-unlimited-size-java-math Factorial\u003e","description_html":"\u003cp\u003eThis challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations.  The primary reference sites are \u003ca href = \"http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Number.html\"\u003eJava Math\u003c/a\u003e, \u003ca href = \"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html\"\u003eJava BigDecimal\u003c/a\u003e, and \u003ca href = \"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigInteger.html\"\u003eJava BigInteger\u003c/a\u003e.\u003c/p\u003e\u003cp\u003eThe usage of BigDecimal functions add, multiply, and pow will be tested.\u003c/p\u003e\u003cp\u003eJava Math tutorial: (Simplified summary that is believed correct)\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003evd-decimal value, vstr-string, vi-integer value \r\nxBD=java.math.BigDecimal(vd);  % valid vd,vstr,vi creates xBD a BigDecimal variable\r\nimport java.math.*;  % simplifies statements\r\nxBD=BigDecimal(vstr);\r\nx2pwrBD=xBD.pow(vi); % Invalid: vd,vstr,BD\r\nxplusyBD=xBD.add(BigDecimal(y)); % add input requires BD type\r\nxmultiplyzBD=xBD.multiply(BigDecimal(z));  % multiply input requires BD type\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eTo convert java to string of unlimited length can be achieved via java toString or Matlab char\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003exstr=toString(xBD)  or xstr=char(xBD) \r\n\u003c/pre\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e X,Y, function_case  [X,Y double or str, function 1:X+Y, 2:X*Y, 3: X^Y(double)\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e z  (char variable)\u003c/p\u003e\u003cp\u003e\u003cb\u003eFuture Challenges:\u003c/b\u003e\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003e1. nchoosek_large (full precision)\r\n2. Next Prime\r\n3. factor_large\r\n\u003c/pre\u003e\u003cp\u003e4. \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1854-factorial-unlimited-size-java-math\"\u003eFactorial\u003c/a\u003e\u003c/p\u003e","function_template":"function zstr=java_math(x,y,select)\r\n import java.math.*\r\n\r\n switch select\r\n    case 1 % add x+y\r\n     zBD=x+y;\r\n    case 2 % multiply  x*y\r\n     zBD=x*y;\r\n    case 3 % power  x^y\r\n     zBD=x^y;\r\n     \r\n end\r\n zstr=char(zBD);\r\n\r\nend","test_suite":"%%\r\nx=2;\r\ny=64;\r\n% power\r\nzstr=java_math(x,y,3);\r\nassert(strcmp(zstr,'18446744073709551616'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nxstr='18446744073709551615';\r\ny=3;\r\n%Add\r\nzstr=java_math(xstr,y,1);\r\nassert(strcmp(zstr,'18446744073709551618'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nx=2^53;  % largest eps==1 double\r\ny=2^11;\r\n%Multiply\r\nzstr=java_math(x,y,2);\r\nassert(strcmp(zstr,'18446744073709551616'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nx=2^53;  % largest valid double\r\ny=2^12;\r\n% Multiply\r\nzstr=java_math(x,y,2);\r\nassert(strcmp(zstr,'36893488147419103232'),sprintf('zstr=%s\\n',zstr))\r\n%%\r\nx=randi(10);\r\ny=randi(100);\r\nzstr=java_math(x,y,1);\r\nassert(strcmp(zstr,num2str(x+y)),sprintf('x=%2i y=%3i x+y=%5i zstr=%s\\n',x,y,x+y,zstr))\r\n%%\r\nx=randi(10);\r\ny=randi(100);\r\nzstr=java_math(x,y,2);\r\nassert(strcmp(zstr,num2str(x*y)),sprintf('x=%2i y=%3i x*y=%5i zstr=%s\\n',x,y,x*y,zstr))\r\n%%\r\nx=randi(20);\r\ny=randi(5);\r\nzstr=java_math(x,y,3);\r\nassert(strcmp(zstr,num2str(x^y)),sprintf('x=%2i y=%3i x^y=%8i zstr=%s\\n',x,y,x^y,zstr))\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":4,"comments_count":3,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":37,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2013-08-18T17:42:26.000Z","updated_at":"2025-12-10T01:06:03.000Z","published_at":"2013-08-18T19:02:27.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThis challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations. The primary reference sites are\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Number.html\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eJava Math\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e,\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eJava BigDecimal\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e, and\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://docs.oracle.com/javase/1.5.0/docs/api/java/math/BigInteger.html\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eJava BigInteger\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe usage of BigDecimal functions add, multiply, and pow will be tested.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eJava Math tutorial: (Simplified summary that is believed correct)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[vd-decimal value, vstr-string, vi-integer value \\nxBD=java.math.BigDecimal(vd);  % valid vd,vstr,vi creates xBD a BigDecimal variable\\nimport java.math.*;  % simplifies statements\\nxBD=BigDecimal(vstr);\\nx2pwrBD=xBD.pow(vi); % Invalid: vd,vstr,BD\\nxplusyBD=xBD.add(BigDecimal(y)); % add input requires BD type\\nxmultiplyzBD=xBD.multiply(BigDecimal(z));  % multiply input requires BD type\\n\\nTo convert java to string of unlimited length can be achieved via java toString or Matlab char\\n\\nxstr=toString(xBD)  or xstr=char(xBD)]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e X,Y, function_case [X,Y double or str, function 1:X+Y, 2:X*Y, 3: X^Y(double)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e z (char variable)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eFuture Challenges:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[1. nchoosek_large (full precision)\\n2. Next Prime\\n3. factor_large]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e4.\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1854-factorial-unlimited-size-java-math\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eFactorial\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"term":"tag:\"pow\"","current_player_id":null,"fields":[{"name":"page","type":"integer","callback":null,"default":1,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"per_page","type":"integer","callback":null,"default":50,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"sort","type":"string","callback":null,"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"body","type":"text","callback":null,"default":"*:*","directive":null,"facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":false},{"name":"group","type":"string","callback":null,"default":null,"directive":"group","facet":true,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"difficulty_rating_bin","type":"string","callback":null,"default":null,"directive":"difficulty_rating_bin","facet":true,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"id","type":"integer","callback":null,"default":null,"directive":"id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"tag","type":"string","callback":null,"default":null,"directive":"tag","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"product","type":"string","callback":null,"default":null,"directive":"product","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"created_at","type":"timeframe","callback":{},"default":null,"directive":"created_at","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"profile_id","type":"integer","callback":null,"default":null,"directive":"author_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"created_by","type":"string","callback":null,"default":null,"directive":"author","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"player_id","type":"integer","callback":null,"default":null,"directive":"solver_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"player","type":"string","callback":null,"default":null,"directive":"solver","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"solvers_count","type":"integer","callback":null,"default":null,"directive":"solvers_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"comments_count","type":"integer","callback":null,"default":null,"directive":"comments_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"likes_count","type":"integer","callback":null,"default":null,"directive":"likes_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"leader_id","type":"integer","callback":null,"default":null,"directive":"leader_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"leading_solution","type":"integer","callback":null,"default":null,"directive":"leading_solution","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true}],"filters":[{"name":"asset_type","type":"string","callback":null,"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":"\"cody:problem\"","prepend":true},{"name":"profile_id","type":"integer","callback":{},"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":"author_id","static":null,"prepend":true}],"query":{"params":{"per_page":50,"term":"tag:\"pow\"","current_player":null,"sort":"map(difficulty_value,0,0,999) 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