Java-Pattern-Programs/Diamond_Pattern.java at main · sagargoswami2001/Java-Pattern-Programs · GitHub

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public class Diamond_Pattern {
    public static void main(String[] args) {

        int n = 4;

        // Upper Half
        for (int i = 1; i <= n; i++) {
            // Spaces
            for (int j = 1; j <= n-i; j++) {
                System.out.print(" ");
            }

            // Stars
            for (int j = 1; j <= 2*i-1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }

        // Lower Half
        for (int i = n; i >= 1; i--) {
            // Spaces
            for (int j = 1; j <= n-i; j++) {
                System.out.print(" ");
            }

            // Stars
            for (int j = 1; j <= 2*i-1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}