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Valid Anagram Given two strings s and t, write a function to determine if t is an anagram of s. For example, s = "anagram", t = "nagaram", return true 阅读全文
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Power of Two Given an integer, write a function to determine if it is a power of two. 阅读全文
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Excel Sheet Column Number Related to question Excel Sheet Column Title Given a column title as appear in an Excel sheet, return its corresponding colu 阅读全文
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Contains Duplicate Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at lea 阅读全文
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Majority Element Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You ma 阅读全文