Nested for loop in java to print the following -

how print following in java:

   5  55 555  55   5 

using nested loop no if statements.

what have far:

public static void main(string[] args) {     for(int = 1; < 6; i++) {          for(int k = 3; k > i; k--) {             system.out.print(" ");         }         for(int k = 3; k < i; k++) {             system.out.print(" ");         }         for(int j = i; j > 0; j--) {              system.out.print("5");         }          system.out.println();      }  } 

as can see, got spaces correct not number of 5's on each line yet. somehow feel there must possible use 1 loop spaces?

you need first break pattern in 2 parts :

• upper half

    5  55 555 

• lower half

  55  5 

in upper half there 3 rows printed. analyze each row.

1. for row no. 1 there 2 blanks , 1 "5".
2. for row no. 2 there 1 blank space , 2 "5"s.
3. for row no. 3 there no blank space , 3 "5"s.

so if represents rows when 1 i.e. row no. 1 no. of blank spaces printed (3-i) i.e. 2 , no. of "5"s printed i.e. 1.

on similar lines can break complete problem. solution:

    class main{         public static void main(string args[]) {             for(int i=1;i<=3;i++) {                for(int j=1;j<=(3-i);j++) {                    system.out.print(" ");                }                for(int j=1;j<=i;j++) {                    system.out.print("5");                }                system.out.println();             }             for(int i=1;i<3;i++) {                for(int j=1;j<=i;j++) {                    system.out.print(" ");                }                for(int j=1;j<=(3-i);j++) {                    system.out.print("5");                }                system.out.println();             }           }     }