Triangle Pattern

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public static void main(String []args){ int num = 6; for(int x=0;x<num;x++){ for(int y=0;y<(num-x-1);y++){ System.out.print(" "); } for(int z=0;z<=x;z++){ System.out.print("*"); for(int a=0;a<z;a = a+z){ System.out.print("*"); } } System.out.println(); } }