6.7 数组转置案例分析

• 利用数组角标来置换操作

class ArrayUtil {

    // 数组转置操作，左右排序颠倒操作;
    public static void reverse(int data []){
        int center = data.length / 2;
        int head = 0;
        int tail = data.length - 1;
        for(int x = 0; x < center ; x++){
            int temp = data[head];
            data[head] = data[tail];
            data[tail] = temp;
            head++;
            tail--;
        }
    }

    public static void printArray(int temp []){
        for(int x = 0;x < temp.length;x++){
            System.out.print(temp[x] + ",");
        }
    }
}


public class HelloWorld {
    public static void main(String[] args){

        int data [] = new int [] {1,2,3,4,5,6};
        ArrayUtil arrayUtil = new ArrayUtil();
        arrayUtil.printArray(data);
        arrayUtil.reverse(data);
        System.out.println();
        arrayUtil.printArray(data);
    }

}