Question: how to implement basic swap function in Java ?
Source code
package com.jt;
/**
* Created by Administrator on 2016/12/7.
*/
public class TestSwap
private static void Swap(int[] a, int[] b) {
int c = a[0];
a[0] = b[0];
b[0] = c;
}
public static void main(String[] args) {
System.out.println("Hello Test");
int[] a = {5};
int[] b = {3};
System.out.println("Befor swap : a[0] = " + a[0] + " b[0] = " + b[0]);
Swap(a, b);
System.out.println("After swap : a[0] = " + a[0] + " b[0] = " + b[0]);
}
}
Result
Hello Test
Befor swap : a[0] = 5 b[0] = 3
After swap : a[0] = 3 b[0] = 5
