Given an integer n, return the number of trailing zeroes in n!.
Note: Your solution should be in logarithmic time complexity.
Credits:Special thanks to @ts for adding this problem and creating all test cases.
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Given an integer n, return the number of trailing zeroes in n!.
Note: Your solution should be in logarithmic time complexity.
Credits:Special thanks to @ts for adding this problem and creating all test cases.
见程序注释