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Palindromic number counting (Posted on 2006-06-22) Difficulty: 3 of 5
Suppose you want to know how many palindromes are in the set of integers from 1 to N. Can you provide a formula for this? Otherwise, can you give an algorithm, as efficient as possible, to find the answer? And, are there special values of N for which there is a simple formula?

No Solution Yet Submitted by Sir Percivale    
Rating: 3.0000 (3 votes)

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  Subject Author Date
Solutionsolved with C source codecheesesteak2006-06-23 23:21:02
Some ThoughtsZeroes allowed?Old Original Oskar!2006-06-22 12:47:15
special values (spoiler for that part)Charlie2006-06-22 09:41:13
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