选择排序、冒泡排序、工具类排序

package com.test.test;

import java.util.Arrays;

/**
* [说明/描述]
*
* @author CaiHaiming
* @date 2016-6-4 下午7:00:07
* @company chm
* @version 1.0
* @copyright copyright (c) 2016
*/
public class Sort1 {
public static void main(String[] args) {
int[] arr = { 123, 2, 23, 134, 1, 123, 12312 };
sort1(arr);
System.out.println(Arrays.toString(arr));
}

public static void sort1(int[] arr) {
for (int i = 0; i < arr.length - 1; i++) {
for (int j = i + 1; j < arr.length; j++) {
if (arr[i] > arr[j]) {
Sort2.swap(arr, i, j);
}
}
}
}
}

package com.test.test;import java.util.Arrays;/** * [说明/描述] *  * @author CaiHaiming * @date 2016-6-4 下午7:00:07 * @company chm * @version 1.0 * @copyright copyright (c) 2016 */public class Sort2 {<span style="white-space:pre">	</span>public static void main(String[] args) {<span style="white-space:pre">		</span>int[] arr = { 123, 2, 23, 134, 1, 123, 12312 };<span style="white-space:pre">		</span>sort1(arr);<span style="white-space:pre">		</span>System.out.println(Arrays.toString(arr));<span style="white-space:pre">	</span>}<span style="white-space:pre">	</span>public static void sort1(int[] arr) {<span style="white-space:pre">		</span>for (int i = 0; i < arr.length - 1; i++) {<span style="white-space:pre">			</span>for (int j = 0; j < arr.length - i - 1; j++) {<span style="white-space:pre">				</span>if (arr[j] > arr[j + 1]) {<span style="white-space:pre">					</span>swap(arr, j, j + 1);<span style="white-space:pre">				</span>}<span style="white-space:pre">			</span>}<span style="white-space:pre">		</span>}<span style="white-space:pre">	</span>}<span style="white-space:pre">	</span>public static void swap(int[] arr, int i, int j) {<span style="white-space:pre">		</span>int temp = arr[i];<span style="white-space:pre">		</span>arr[i] = arr[j];<span style="white-space:pre">		</span>arr[j] = temp;<span style="white-space:pre">	</span>}}

package com.test.test;import static java.util.Arrays.sort;import java.util.Arrays;/** * [说明/描述] *  * @author CaiHaiming * @date 2016-6-4 下午7:00:07 * @company chm * @version 1.0 * @copyright copyright (c) 2016 */public class Sort3 {<span style="white-space:pre">	</span>public static void main(String[] args) {<span style="white-space:pre">		</span>int[] arr = { 123, 2, 23, 134, 1, 123, 12312 };<span style="white-space:pre">		</span>sort(arr);<span style="white-space:pre">		</span>System.out.println(Arrays.toString(arr));<span style="white-space:pre">	</span>}}