MyJava/DiamondShape at master · hajricod/MyJava · GitHub

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public class DiamondShape{

     public static void main(String []args){

       testDiamondShapeString();
     }

    public static void testDiamondShapeString() {

        String s = "Ahmed Salim Alhajri";

        triangleTop(s);
    }

    public static void triangleTop(String s) {


        for(int k=1; k <= s.length(); k++) {

            for(int i = k; i < s.length(); i++) {
                System.out.print(" ");
            }

            System.out.print(s.substring(0, k));
            System.out.print(" ");
            System.out.print(s.substring(0, k));
            System.out.println();
        }

        triangleBottom(s);
    }

    public static void triangleBottom(String s) {

        for(int k = s.length()-1; k >= 0; k--){

            for(int i = k; i < s.length() && i != 0; i++) {
                System.out.print(" ");
            }

            System.out.print(s.substring(0, k));
            System.out.print(" ");
            System.out.print(s.substring(0, k));
            System.out.println();
        }

    }

}