排颜色 II 给定一个有n个对象(包括k种不同的颜色,并按照1到k进行编号)的数组,将对象进行分类使相同颜色的对象相邻,并按照1,2,...k的顺序进行排序. 样例 给出colors=[3, 2, 2, 1, 4],k=4, 你的代码应该在原地操作使得数组变成[1, 2, 2, 3, 4] 解题 直接快排 class Solution { /** * @param colors: A list of integer * @param k: An integer * @return: nothin…

143-排颜色 II 给定一个有n个对象(包括k种不同的颜色,并按照1到k进行编号)的数组,将对象进行分类使相同颜色的对象相邻,并按照1,2,...k的顺序进行排序. 注意事项 You are not suppose to use the library's sort function for this problem. k <= n 样例 给出colors=[3, 2, 2, 1, 4],k=4, 你的代码应该在原地操作使得数组变成[1, 2, 2, 3, 4] 挑战 一个相当直接的解决方案是…

问题描写叙述: 给一个数组,而且数组里面元素的值仅仅可能是0,1,2,然后如今把这个数组排序. 第二种表述: 现有n个红白蓝三种不同颜色的小球,乱序排列在一起,请通过两两交换随意两个球,使得从左至右,依次是一些红球.一些白球.一些蓝球. 解题思路: 採用高速排序partition的思想,用两个指针将三种颜色间隔开. 以下引用此处内容 July 编程艺术系列中荷兰国旗问题. 一个前指针begin,一个中指针current,一个后指针end,current指针遍历整个数组序列,当 current指针…

Sort Colors II 原题链接: http://lintcode.com/zh-cn/problem/sort-colors-ii/# Given an array of n objects with k different colors (numbered from 1 to k), sort them so that objects of the same color are adjacent, with the colors in the order 1, 2, ... k. 注意…

Majority Number II 原题链接: http://lintcode.com/en/problem/majority-number-ii/# Given an array of integers, the majority number is the number that occurs more than 1/3 of the size of the array. Find it. Note There is only one majority number in the arra…

Given an integer array, sort it in ascending order. Use quick sort, merge sort, heap sort or any O(nlogn) algorithm.   Example Given [3, 2, 1, 4, 5], return [1, 2, 3, 4, 5]. 快速排序是排序算法中比较重要一种,也是经常容易考的一种排序算法,务必要掌握好.快排的优点是其平均时间复杂度为O(nlgn),这样在给大数据集排序的时候,…

Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3].... Notice You may assume all input has valid answer. ExampleGiven nums = [1, 5, 1, 1, 6, 4], one possible answer is [1, 4, 1, 5, 1, 6]. Given nums = [1, 3,…

There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house with a certain color is different. You have to paint all the houses such that no two adjacent houses have the same color. The cost of pai…

After robbing those houses on that street, the thief has found himself a new place for his thievery so that he will not get too much attention. This time, all houses at this place are arranged in a circle. That means the first house is the neighbor o…

Given an array of n objects with k different colors (numbered from 1 to k), sort them so that objects of the same color are adjacent, with the colors in the order 1, 2, ... k. Note You are not suppose to use the library's sort function for this probl…