冒泡排序

package com.test;


/**
 * @ClassName: Bubble.java
 * @Description: 冒泡排序
 * @author Bert
 * 2014-4-3 下午9:17:00
 */
public class Bubble {


public static void main(String[] args) {

Integer[] num = {5,8,9,1,2};

if(num == null ){

return;

}

int temp;
for (int i = 0; i < num.length; i++) {
for (int j = i + 1; j < num.length; j++) {
if (num[j] < num[i]) {
temp = num[j];
num[j] = num[i];
num[i] = temp;
}
}
}
for (int i : num) {
System.out.println(i);
}
}
}