Triangle of any size in Java Example

Algorithm for Triangle of any size:

step 1: set i=0,j=0,row=0,osc=0,var=0

step 2: read row

step 3: if row greater than 0 then execute following codes otherwise goto

          step-33

step 4: osc=row-l

step 5: set isc= 1

step 6: initialize i=osc

step 7: Repeat through step-9 while i greater than 0

step 8: Print one space

step 9: i=i-1

step 10: Print “*”

step 11: osc=osc-1

step 12: Initialize i=2

step 13: Repeat through slep-26 while i less than row

step 14: initialize k=osc

step 15: Repeat through step-17 while k greater than 0

step 16: Print one space

step 17: k=k-1

step 18: Print “*”

step 19: Initialize j=isc

step 20: Repeat through step-22 while j greater than 0

step 21: Print one space

step 22: j=j-1

step 23: Print “*”

step 24: isc=isc+ 2

step 25: osc=osc-l

step 26: i=i+1

step 27: If row not equal to one then execute following codes otherwise

          goto step-33

step 28: Initialize i= 1

step 29: Repeat through step-32 while i less than or equals to row

step 30: Print “*”

step 31: Print one space

step 32: i=i+ 1

step 33: Exit

Here is the Java Example for Triangle of any size:

import java.util.*; 
 class RectangleofAnySize 
 { 
           public static void main(String s[]) 
         { 
            int i,j,row,isc,osc,var; 
            i=j=row=osc=var=0; 
            Scanner read=new Scanner(System.in); 
            System.out.print("Enter Number of Rows : "); 
            row=read.nextInt(); 
            System.out.println("\n"); 
            if(row>0) 
              { 
                 System.out.print("\t"); 
                 osc=row-1; 
                 isc=1; 
                 for(i=osc;i>0;i--) 
                    { 
                        System.out.print(" "); 
                    } 
                        System.out.println("*"); 
                        osc--; 
                 for(i=2;i<row;i++) 
                    { 
                       System.out.print("\t"); 
                       for(int k=osc;k>0;k--) 
                          { 
                            System.out.print(" "); 
                          } 
                            System.out.print("*"); 
                              for(j=isc;j>0;j--) 
                                 { 
                                   System.out.print(" "); 
                                 } 
                                   System.out.println("*"); 
                                   isc+=2; 
                                   osc--; 
                     } 
                                    System.out.print("\t"); 
                                       if(row!=1) 
                                        { 
                                         for(i=1;i<=row*2-1;i++) 
                                           { 
                                             System.out.print("*"); 
                                           } 
                                        } 
               } 
 System.out.println(""); 
          } 
 }