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edg-l/compare.cpp

Last active September 11, 2018 21:08
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Compare digit
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compare.cpp
#include <cmath>
bool compareDigit(int a, int b, int n)
{
return (a - (a % (int)pow(10, n - 1))) % (int)pow(10, n) == (b - (b % (int)pow(10, n - 1))) % (int)pow(10, n);
}
// compareDigit(234, 134, 1) == true (4 == 4)
// compareDigit(234, 134, 3) == false (2 != 1)
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