How to print Pascal's Triangle Pattern in Java - Step by Step Examples

How to print Pascal's Triangle Pattern in Java ?

Answer

To print Pascal's Triangle Pattern in Java, you can use a nested loop structure 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 a 2D 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.

Java Program

// Java program to print Pascal's Triangle Pattern
public class Main {
    public static void printPascalsTriangle(int n) {
        int[][] pascal = new int[n][n];
        for (int line = 0; line < n; line++) {
            for (int i = 0; i <= line; i++) {
                if (i == 0 || i == line) {
                    pascal[line][i] = 1;
                } else {
                    pascal[line][i] = pascal[line - 1][i - 1] + pascal[line - 1][i];
                }
                System.out.print(pascal[line][i] + " ");
            }
            System.out.println();
        }
    }

    public static void main(String[] args) {
        int rows = 5;
        printPascalsTriangle(rows);
    }
}

Output

Summary

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

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