Cody

Problem 1162. Happy 2013...

Solution 305399

Submitted on 16 Aug 2013 by Erin
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

This solution is outdated. To rescore this solution, sign in.

Solve This Problem View on Solution Map

Test Suite

Test Status Code Input and Output
1   Pass
!cp diff_digits.m safe !rm *.* !mv safe diff_digits.m % Clean user's function from some known jailbreaking mechanisms fid = fopen('diff_digits.m'); st = regexprep(char(fread(fid)'), '!', 'error(''No shell commands!''); %'); st = regexprep(st, 'feval', 'error(''No fancy functions!''); %'); st = regexprep(st, 'str2func', 'error(''No fancy functions!''); %'); st = regexprep(st, 'regex', 'error(''No fancy functions!''); %'); st = regexprep(st, 'system', 'error(''No shell commands!''); %'); st = regexprep(st, 'dos', 'error(''No shell commands!''); %'); st = regexprep(st, 'unix', 'error(''No shell commands!''); %'); st = regexprep(st, 'perl', 'error(''No external languages commands!''); %'); st = regexprep(st, 'java', 'error(''No external languages commands!''); %'); st = regexprep(st, 'assert', 'error(''No overwriting!''); %'); fclose(fid) fid = fopen('diff_digits.m' , 'w'); fwrite(fid,st); fclose(fid)

ans = 0 ans = 0

2   Pass
%% start=1000; finish=1023; y_correct = 1; assert(isequal(diff_digits(start,finish),y_correct))

3   Pass
%% start=1000; finish=9999; y_correct = 4536; assert(isequal(diff_digits(start,finish),y_correct))

4   Pass
%% start=1234; finish=5678; y_correct = 2273; assert(isequal(diff_digits(start,finish),y_correct))

5   Pass
%% assert(isequal(diff_digits(4321,6789),1210))

6   Pass
%% assert(isequal(diff_digits(1988,2012),0))

Suggested Problems

More from this Author80