Recursive Multiplication

Developer
Size
2,119 Kb
Views
58,696

How do I make an recursive multiplication?

Challenged to do multiplication without using *. What is a recursive multiplication? How do you make a recursive multiplication? This script and codes were developed by Steven on 24 September 2022, Saturday.

Recursive Multiplication Previews

Recursive Multiplication - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Recursive Multiplication</title>
</head>
<body> <script src="js/index.js"></script>
</body>
</html>

Recursive Multiplication - Script Codes JS Codes

"use strict";
// Or some recursion perhaps
// Less lazy, handled signs. Feels like I'm missing a trick though.
function mult(x, y) { var resultSign = x < 0 ? // x less than zero y > 0 ? -1 : 1 : // x greater than zero y < 0 ? -1 : 1; x = volvAbs(x); y = volvAbs(y); function doMult(x, y) { if (y === 0) return 0; // End recursion return x + doMult(x, y - 1); } return resultSign === 1 ? doMult(x, y) : -doMult(x, y);
}
function volvAbs(x) { // Stupid negatives return x < 0 ? -x : x;
}
console.clear();
console.log(mult(6, 7)); // 42
console.log(mult(-6, 7)); //-42
console.log(mult(6, -7)); //-42
console.log(mult(-6, -7)); // 42
Recursive Multiplication - Script Codes
Recursive Multiplication - Script Codes
Home Page Home
Developer Steven
Username volv
Uploaded September 24, 2022
Rating 3
Size 2,119 Kb
Views 58,696
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