Java – Left Triangle Patterns:

Pattern:Code:
        1
      21
    321
  4321
54321
for (int i=1 ; i<=5 ; i++)
{
            for (int j=i ; j<5 ; j++){
                        System.out.print(” “);
            }
            for (int k=i ; k>=1 ; k–){
                        System.out.print(k);
            }
            System.out.println();
}
Pattern:Code:
        5
      45
    345
  2345
 12345
for (int i=5 ; i>=1 ; i–){
            for (int j=1 ; j<i ; j++){
                        System.out.print(” “);
            }
            for (int k=i ; k<=5 ; k++){
                        System.out.print(k);
            }
            System.out.println();
}
Pattern:Code:
        5
      54
    543
  5432
54321
for (int i=5 ; i>=1 ; i–){
            for (int j=1 ; j<i ; j++){
                        System.out.print(” “);
            }
            for (int k=5 ; k>=i ; k–){
                        System.out.print(k);
            }
            System.out.println();
}
Pattern:Code:
        *
      **
    ***
  ****
*****
for (int i=1 ; i<=5 ; i++){
            for (int j=i ; j<5 ; j++){
                        System.out.print(” “);
            }
            for (int k=1 ; k<=i ; k++){
                        System.out.print(“*”);
            }
            System.out.println();
}

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