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Problem Definition: Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. Y... 阅读全文
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Problem Definition: Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C ->... 阅读全文
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Problem Definition: Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity.Sol... 阅读全文
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Problem Definition: Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated t... 阅读全文