Carbon Program to swap digits

In this were going to learn about two ways to swap two numbers in Carbon, and those are mentioned below:

1. Using a temp variable.
2. Without using a temp variable.

1. Using a temp variable

The idea is simple for this approach for swapping two numbers:

1. Assign x variable to a temp variable: temp = x
2. Assign y variable to x variable: x = y
3. Assign temp variable to y variable: y = temp

Below is the Carbon program to implement the Swapping with temp variable approach:

package sample api;fn Main() -> i32 {    // using temp variable    var x: i32 = 1;    var y: i32 = 2;    var temp: i32 = x;    x = y;    y = temp;    Print("SWAPPING");    Print("x: {0}", x);    Print("y: {0}", y);    return 0;}

Output:

SWAPPINGx: 2y: 1

2. Without using temp variable

The idea is simple for this approach for swapping two numbers:

• Assign to y the sum of x and b i.e. y = x + y.
• Assign to x difference of y and x i.e. x = y x.
• Assign to y the difference of y and x i.e. y = y x.

Below is the Carbon program to implement the Swapping without temp variable approach:

package sample api;fn Main() -> i32 {    // without temporary variable    var x: i32 = 10;    var y: i32 = 2;    y = x + y;    x = y - x;    y = y - x;    Print("SWAPPING");    Print("x: {0}", x);    Print("y: {0}", y);    return 0;}

Output:

SWAPPINGx: 2y: 10

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