Java 实例 - 数组排序及查找
以下实例演示了如何使用 sort () 和 binarySearch () 方法来对数组进行排序及查找数组中的元素,我们定义了 printArray() 输出结果:
/*
author by phpcodeweb.com
文件名:Main.java
*/
import java.util.Arrays;
public class MainClass {
public static void main(String args[]) throws Exception {
int array[] = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 };
Arrays.sort(array);
printArray("Sorted array", array);
int index = Arrays.binarySearch(array, 2);
System.out.println("Found 2 @ " + index);
}
private static void printArray(String message, int array[]) {
System.out.println(message
+ ": [length: " + array.length + "]");
for (int i = 0; i < array.length; i++) {
if(i != 0){
System.out.print(", ");
}
System.out.print(array[i]);
}
System.out.println();
}
}
以上代码运行输出结果为:
Sorted array: [length: 10]
-9, -7, -3, -2, 0, 2, 4, 5, 6, 8
Found 2 @ 5