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Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr 阅读全文
posted @ 2019-09-23 14:58
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Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrenc 阅读全文
posted @ 2019-09-23 11:46
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Given a non-empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runti 阅读全文
posted @ 2019-09-23 11:17
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Given an array of strings, group anagrams together. Example: All inputs will be in lowercase. The order of your output does not matter. 解法： 首先遍历输入，同时对 阅读全文
posted @ 2019-09-23 11:14
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LeetCode 1. Two Sum Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each 阅读全文
posted @ 2019-09-23 10:53
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