Question

Write a program in java to display the pattern like right angle triangle with a number.
If given n = 4 then,
The pattern like :
1 12 123 1234
If n=5 then,
The pattern like :
1 12
123 1234
12345

Answer 1

1)

#include <stdio.h>

int main() {

int i, space, rows, k = 0; printf("Enter the number of rows

scanf("%d", &rows);

for (i = 1; i <= rows; ++i, k = for (space = 1; space <= rows printf(" ");

} while (k != 2 * i - 1) { printf("* ");

++k;

} printf("\n");

} return 0;

}

2) see in attachment

Answer 2

Easiest program:

package com.company;  

public class Main {

  public static void main(String[] args) {

      int s = 0;

      for (int i = 1; i <= 5 ; i++) {

          s = s*10+i;

          System.out.println(s);

      }

  }

}

Output:

1

12

123

1234

12345