How to print Pascal's Triangle Pattern in JavaScript

How to print Pascal's Triangle Pattern in JavaScript ?

Answer

To print Pascal's Triangle Pattern in JavaScript, you can use nested loops where the outer loop controls the rows and the inner loop calculates the values for each row based on the binomial coefficient formula.

✐ Examples

1 Pascal's Triangle Pattern

In this example,

We use a variable n to represent the number of rows in Pascal's triangle.
We initialize an array pascal to store the triangle values.
We use nested loops to calculate and store the values using the binomial coefficient formula.
We print the triangle values using a formatted output.

JavaScript Program

function printPascalsTriangle(n) {
    let pascal = [];
    for (let i = 0; i < n; i++) {
        pascal[i] = [];
        for (let j = 0; j <= i; j++) {
            if (j === 0 || j === i) {
                pascal[i][j] = 1;
            } else {
                pascal[i][j] = pascal[i - 1][j - 1] + pascal[i - 1][j];
            }
            process.stdout.write(pascal[i][j] + ' ');
        }
        console.log();
    }
}

let rows = 5;
printPascalsTriangle(rows);

Output

Summary

In this tutorial, we learned How to print Pascal's Triangle Pattern in JavaScript language with well detailed examples.

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