Go Program to Swap Two Numbers

Write a Go program to swap two numbers using a temp variable and without using a temporary variable. In the below example, we allow users to enter two variables and use the temp variable to swap them.

package main

import "fmt"

func main()  {
    var a, b, temp int
    fmt.Print("Enter the First  = ")
    fmt.Scanln(&a)

    fmt.Print("Enter the Second  = ")
    fmt.Scanln(&b)

    temp = a
    a = b
    b = temp

    fmt.Println("The First Number after  = ", a)
    fmt.Println("The Second Number after = ", b)
}

Enter the First  = 10
Enter the Second  = 20
The First Number after  =  20
The Second Number after =  10

Go Program to Swap Two Numbers without Temp variable.

In this example, we used the Golang arithmetic operators to swap two numbers.

package main

import "fmt"

func main()  {
    var a, b int
    fmt.Print("Enter the a Value = ")
    fmt.Scanln(&a)

    fmt.Print("Enter the b Value = ")
    fmt.Scanln(&b)

    a = a + b
    b = a - b
    a = a - b

    fmt.Println("a Value after Swap = ", a)
    fmt.Println("b Value after Swap = ", b)
}

This Program will Swap two numbers using Bitwise Operators.

package main

import "fmt"

func main()  {
    var a, b int
    fmt.Print("Enter the a Value = ")
    fmt.Scanln(&a)

    fmt.Print("Enter the b Value = ")
    fmt.Scanln(&b)

    a = a ^ b
    b = a ^ b
    a = a ^ b

    fmt.Println("a Value after  = ", a)
    fmt.Println("b Value after  = ", b)
}

Enter the a Value = 99
Enter the b Value = 240
a Value after  =  240
b Value after  =  99