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Given an array A of non-negative integers, half of the integers in A are odd, and half of the integers are even. Sort the array so that whenever A[i] 阅读全文
posted @ 2020-06-29 14:44
whatyouthink
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Students are asked to stand in non-decreasing order of heights for an annual photo. Return the minimum number of students that must move in order for 阅读全文
posted @ 2020-06-29 14:34
whatyouthink
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Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of 阅读全文
posted @ 2020-06-29 14:13
whatyouthink
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Given a m * n matrix of distinct numbers, return all lucky numbers in the matrix in any order. A lucky number is an element of the matrix such that it 阅读全文
posted @ 2020-06-29 14:07
whatyouthink
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Given an array of integers A sorted in non-decreasing order, return an array of the squares of each number, also in sorted non-decreasing order. nlog做 阅读全文
posted @ 2020-06-29 13:36
whatyouthink
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Given an array of unique integers salary where salary[i] is the salary of the employee i. Return the average salary of employees excluding the minimum 阅读全文
posted @ 2020-06-29 13:11
whatyouthink
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Given an array A of non-negative integers, return an array consisting of all the even elements of A, followed by all the odd elements of A. You may re 阅读全文
posted @ 2020-06-29 12:52
whatyouthink
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Given two integer arrays of equal length target and arr. In one step, you can select any non-empty sub-array of arr and reverse it. You are allowed to 阅读全文
posted @ 2020-06-29 12:48
whatyouthink
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Given a binary matrix A, we want to flip the image horizontally, then invert it, and return the resulting image. To flip an image horizontally means t 阅读全文
posted @ 2020-06-29 12:42
whatyouthink
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Given an integer n, return any array containing n unique integers such that they add up to 0. 分奇偶吧，偶就给i和-i，奇的话就最后多给个0 class Solution(object): def sumZ 阅读全文
posted @ 2020-06-29 12:36
whatyouthink
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