JavaScript: Swap three numbers

Last update on November 30 2022 12:12:13 (UTC/GMT +8 hours)

JavaScript Math: Exercise-75 with Solution

Write a JavaScript program to swap three numbers without a third variable.

Test Data:
(100, 200, 300) -> 300, 100, 200

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript program to Swap three numbers</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function test(x, y, z)
{
    x = x + y + z;
    y = x - (y + z);
    z = x - (y + z);
    x = x - (y + z);
    return [x, y, z];  
}
 
x = 100; 
y = 200; 
z = 300;
console.log("Before swapping:")
console.log("x = "+x);
console.log("y = "+y);
console.log("z = "+z);
result = test(x, y, z);
console.log("After swapping:");
console.log("x = "+result[0]);
console.log("y = "+result[1]);
console.log("z = "+result[2]);

Sample Output:

Before swapping:
x = 100
y = 200
z = 300
After swapping:
x = 300
y = 100
z = 200

Flowchart:

$JavaScript: Swap three numbers$

Live Demo:

See the Pen javascript-math-exercise-75 by w3resource (@w3resource) on CodePen.

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