Problem 1731. Text File Read: 64 bit data set

Created by Richard Zapor

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This Challenge is to read a text file that has vary large integers up to 2e18, typical for <a href = "http://code.google.com/codejam/contests.html">Google Code Jam</a>. These values are well within the bounds of uint64.The data is an array of Q pairs.Input: [Q, fname] The number of lines in the file and its filename.Output: M a uint64 matrix of size(Q,2)Example:<pre class="language-matlab">Input: {4, 'Cody_64.txt']
The text file:
308436464205151562 1850618785230909388
373665302816212423 1494661211264849698
760961177192651897 1521922354385303795
1 2000000000000000000
</pre><pre class="language-matlab">Ouput: A uint64 (4,2) matrix to full precision.
</pre>Note of Warning:The fscanf function with %ul may not succeed, as of 7/20/2013.The result window has a case showing the function outputRelated Challenges:<pre class="language-matlab">1) Bullseye Large Numbers r&lt;1E18, P&lt;2E18
2) Super Large Numbers >2^64 (Java BigInteger methods)
</pre>

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Last Solution submitted on Nov 20, 2018

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Solution 286930

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3 Comments

Richard Zapor on 22 Jul 2013

Nice find in sscanf.

J.R.! Menzinger on 23 Jul 2013

;-)

J.R.! Menzinger on 23 Jul 2013

I used to read very much on Matlab's help, but since I play Cody, I read it a lot of times MORE!!! :-D

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%u64 cell array char fopen fscanf str2num textscan uint64 ul

Problem 1731. Text File Read: 64 bit data set

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Problem 1731. Text File Read: 64 bit data set

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