Swap Two Numbers in Deluge | With and Without Using a Third Variable | Beginner Friendly Tutorial

Deluge Script to Swap two Variables

Now, suppose you have two values, a and b, and you want to exchange values of these two variables what each one holds.

Examples of Swapping

Input : a = 5, b = 10;
Output : a = 10, b = 5

Different Methods to Swap of Two Numbers in Deluge

1. Using Third Variables or Temporary Variable

Below are the simple steps we follow: 

1. Copy the value of 'a' into temp:temp=a
2. Move the value of 'b' into 'a': a = b
3. Put the saved 'temp' value back into 'b': b = temp

 // Using a third variable
temp = a;
a = b;
b = temp;

2. Without any extra Variable

Below are the simple steps we follow: 

1. First add both variables Numbers 'a & b' and store the sum in 'a'
2. Next,set 'b' to the value of -a that now holds a+b & subtract the old 'a'
3. Finally,fix 'a' by subtracting the new 'b' from the current sum.

  // Without using a third variable
a = a + b;
b = a - b;
a = a - b;