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 blue respectively.

Note:
You are not suppose to use the library's sort function for this problem.

（1）题意为给定一个数组，里面含有红白蓝三种颜色（顺序是打乱的），将其调整为红-->白-->蓝的顺序。其中，0，1，2分别对应红，白，蓝。

（2）该题的实质就是一个排序操作。只不过相同的元素比较多，需要确定下来。本文使用的方法比较简单，首先，遍历数组，确定0，1，2的个数；然后，再对数组进行遍历，依次将0，1，2填入数组中。具体操作为，只要0的个数大于零，就将0填入数组，然后个数减1，直到0全部放入数组为止，继续将1和2按照其对应的个数放入数组中。最后，所得的数组中就是以连续的0-->1-->2的顺序分布。

（3）希望本文对你有所帮助。

```	/**
*
* @author liqq
*/
public void sortColors(int[] A) {
if (A == null || A.length <= 1)
return;

int _zeor = 0;
int _one = 0;
int _two = 0;

for (int i = 0; i < A.length; i++) {
if (A[i] == 0)
_zeor++;
if (A[i] == 1)
_one++;
if (A[i] == 2)
_two++;
}

for (int i = 0; i < A.length; i++) {
if (_zeor > 0) {
A[i] = 0;
_zeor--;
continue;
}
if (_one > 0) {
A[i] = 1;
_one--;
continue;
}

if (_two > 0) {
A[i] = 2;
_two--;
}
}
}```

## Leetcode_75_Sort Colors的更多相关文章

1. Sort Colors

Given an array with n objects colored red, white or blue, sort them so that objects of the same colo ...

2. [LeetCode] Sort Colors 颜色排序

Given an array with n objects colored red, white or blue, sort them so that objects of the same colo ...

3. Leetcode 75. Sort Colors

Given an array with n objects colored red, white or blue, sort them so that objects of the same colo ...

4. CF444C. DZY Loves Colors[线段树 区间]

C. DZY Loves Colors time limit per test 2 seconds memory limit per test 256 megabytes input standard ...

5. Codeforces444C DZY Loves Colors（线段树）

题目 Source http://codeforces.com/problemset/problem/444/C Description DZY loves colors, and he enjoys ...

6. Sort Colors [LeetCode]

Given an array with n objects colored red, white or blue, sort them so that objects of the same colo ...

7. 【LeetCode】Sort Colors

Sort Colors Given an array with n objects colored red, white or blue, sort them so that objects of t ...

8. PAT (Advanced Level) Practise：1027. Colors in Mars

[题目链接] People in Mars represent the colors in their computers in a similar way as the Earth people. ...

9. LintCode Sort Colors

For this problem we need to sort the array into three parts namely with three numbers standing for t ...

## 随机推荐

1. final的使用

final对基本类型,限定常量. final对对象的引用,不可引用其他对象. final的字段,必须在定义时或者构造器内完成初始化.构造内才完成初始化的Blank Final(空白final). cl ...

2. jsp之 ---- 页面重定向和请求转发（笔记之深度说明）

1.  HttpServletResponse对象的sendRedirect(String location)方法称作重定向. 如果location地址前面加上“/”,则表示  相对于Servlet容 ...

3. function的粗浅理解

<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title> ...

4. /bin/bash^M: bad interpreter: No such file or directory 解决办法

参考:-bash: ./my_script: /bin/bash^M: bad interpreter: No such file or directory [duplicate] 有的时候运行.sh ...

5. Python学习笔记(二)

标识符和关键字 1,邮箱的Python标识符是任意长度的非空字符序列(引导字符+后续字符.) python标识符必须符合两条规则--标识符区分大小写 (1)只要是unicode编码字母都可以充当引导字 ...

6. C语言清屏函数

Devc++ 与VC中的清屏函数 #include<stdio.h> #include<stdlib.h>//清屏函数的头文 int main() { int i; for(i ...

7. QGIS+GH + MapServer

拒绝描图,如何利用GH+QGIS完爆场地底图?http://www.sohu.com/a/251004986_657084 拒绝描图--爬取OSM数据绘制底图 所用软件 RHINO+GH\QGIS\G ...

8. 基于 html5 geolocation来获取经纬度地址(copy)

geolocation来获取经纬度地址 以前如果要获取互联网用户所在地都是根据用户的IP地址来获取地理位置,这样获取到的数据和真实数据有很大的偏差.为了获取更加精确的位置,可以使用了html5的geo ...

9. codeforces707C：Pythagorean Triples

Description Katya studies in a fifth grade. Recently her class studied right triangles and the Pytha ...

10. SQL Server 性能优化之RML Utilities：快速入门（Quick Start）（1）

SQL Server 性能优化之RML Utilities:快速入门(Quick Start)(1) 安装Quick Start工具 RML(Replay Markup Language)是MS ...