Medium
Quiz
#172 Factorial Trailing Zeroes
APPROACH
Compute the number of trailing zeros in n! and return it, where n is the given integer.
Example 1:
Input: n = 3
Output: 0
Explanation: 3! = 6, no trailing zero.
Example 2:
Input: n = 5
Output: 1
Explanation: 5! = 120, one trailing zero.
Example 3:
Input: n = 0
Output: 0
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What is the optimal approach for this problem?