题目标签:Array 题目给了我们一个数组 和 k. 让我们 旋转数组 k 次. 方法一: 这里有一个很巧妙的方法: 利用数组的length - k 把数组 分为两半: reverse 左边和右边的数组: reverse 总数组. 举一个例子: 1 2 3 4 5 6 7 如果k = 3 的话, 会变成 5 6 7 1 2 3 4 1 2 3 4 5 6 7 middle = 7 - 3 = 4,分为左边 4个数字,右边 3个数字 4 3 2 1 7 6 5 分别把左右reverse 一下 5…

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 to [5,6,7,1,2,3,4]. Note:Try to come up as many solutions as you can, there are at least 3 different ways to solve this pro…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 切片 递归 日期 题目地址:https://leetcode.com/problems/rotate-array/description/ 题目描述 Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array […

#-*- coding: UTF-8 -*-#由于题目要求不返回任何值,修改原始列表,#因此不能直接将新生成的结果赋值给nums,这样只是将变量指向新的列表,原列表并没有修改.#需要将新生成的结果赋予给nums[:],才能够修改原始列表class Solution(object):    def rotate(self, nums, k):        """        :type nums: List[int]        :type k: int        :…

Given two sorted integer arrays A and B, merge B into A as one sorted array. Note:You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are ma…

448. Find All Numbers Disappeared in an Array[easy] Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] inclusive that do not appear in this array. Coul…

167. Two Sum II - Input array is sorted[easy] Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such…

561. Array Partition I[easy] 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 min(ai, bi) for all i from 1 to n as large as possible. Example 1: Inpu…

27. Remove Element[easy] Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. The order of elements can be ch…

1. Two Sum[easy] 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 input would have exactly one solution, and you may not use the same element twice. Example: Given nums…