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Given an array of characters, compress it in place. The length after compression must always be smaller than or equal to the original array. Every ele 阅读全文
posted @ 2019-01-07 21:42
bernieloveslife
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Given scores of N athletes, find their relative ranks and the people with the top three highest scores, who will be awarded medals: "Gold Medal", "Sil 阅读全文
posted @ 2019-01-07 21:21
bernieloveslife
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Some people will make friend requests. The list of their ages is given and ages[i] is the age of the ith person. Person A will NOT friend request pers 阅读全文
posted @ 2019-01-07 21:05
bernieloveslife
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Given n points in the plane that are all pairwise distinct, a "boomerang" is a tuple of points (i, j, k) such that the distance between i and j equals 阅读全文
posted @ 2019-01-07 19:43
bernieloveslife
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Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example 1: Example 2: 很蠢得用了模拟法。。 阅读全文
posted @ 2019-01-07 18:13
bernieloveslife
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Given a list of sorted characters letters containing only lowercase letters, and given a target letter target, find the smallest element in the list t 阅读全文
posted @ 2019-01-07 17:05
bernieloveslife
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Find the sum of all left leaves in a given binary tree. 阅读全文
posted @ 2019-01-07 16:58
bernieloveslife
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You need to construct a string consists of parenthesis and integers from a binary tree with the preorder traversing way. The null node needs to be rep 阅读全文
posted @ 2019-01-07 16:28
bernieloveslife
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