Java – Pascal’s Triangle Patterns

Pattern:

        1
      1 2 1
    1 2 3 2 1
  1 2 3 4 3 2 1
1 2 3 4 5 4 3 2 1

Code:

int r=6, c=1; for(int i=0; i<r ; i++) {             for(int s=1; s<r-i; s++) {                         System.out.print(”  “);             }             for(int j=0; j<=i; j++) {                         if (j==0 || i==0)                                     c=1;                         else                                     c=c*(i-j + 1)/j;                         System.out.printf(“%4d”, c);             }             System.out.println(); }

Pattern:

123454321
 1234321
  12321
   121
    1

for (int i = 5; i >= 1; i–){             for (int j = 5 – i; j >= 1; j–){                         System.out.print(” “);             }             for (int j = 1; j <= i; j++){                         System.out.print(j);             }             for (int j = i – 1; j >= 1; j–){                         System.out.print(j);             }             System.out.println(); }