一.题目说明 题目75. Sort Colors,给定n个整数的列表(0代表red,1代表white,2代表blue),排序实现相同颜色在一起.难度是Medium. 二.我的解答 这个是一个排序,还是简单的,代码如下: class Solution{ public: void sortColors(vector<int>& nums){ int num0=0,num1=0,num2=0; for(int i=0;i<nums.size();i++){ if(nums[i]==0)…

要求 给只有0 1 2三个元素的数组排序 思路 方法1:遍历数组,利用辅助数组保存三个元素的个数,再写入(遍历两遍) 辅助数组有三个元素,对应0 1 2的个数 方法2:模拟三路快排,遍历一遍完成排序 三个索引,zero和two用于首尾的扩充,i用于遍历 遍历数组,每个元素只有三种可能 0 2移到首尾,1不动 实现 方法1 1 void sortColors(vector<int>& nums){ 2 int count[3] = {0}; 3 for( int i = 0 ; i &l…

Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, whit…

  75. Sort Colors   给定一个具有红色,白色或蓝色的n个对象的数组,将它们就地 排序,使相同颜色的对象相邻,颜色顺序为红色,白色和蓝色. 这里,我们将使用整数0,1和2分别表示红色,白色和蓝色. 注意:  您不应该使用库的排序功能来解决此问题. 例: 输入: [2,0,2,1,1,0]输出: [0,0,1,1,2,2] 跟进: 一个相当直接的解决方案是使用计数排序的两遍算法.首先,迭代0,1,和2的数组计数,然后覆盖总数为0的数组,然后是1,然后是2. 你能想出一个只使用恒定空…

Question 75. Sort Colors Solution 题目大意: 给一个数组排序,这个数组只有0,1,2三个元素,要求只遍历一遍 思路: 记两个索引,lowIdx初始值为0,highIdx初始值为nums.length - 1,遍历数组,如果是2就与highIdx处元素互换且highIdx-,如果是0就与lowIdx处元素互换且lowIdx++,i++,还剩一种情况就是1了,执行i++,循环结束条件是i<=highIdx Java实现: public void sortColors…

Sort Colors Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, w…

Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, whit…

Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, white, and bl…

Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, whit…

Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, white, and bl…