import java.util.*;  public class Main{      public static void main(String[] args) {          Scanner sc= new Scanner(System.in);          int a1= sc.nextInt();         int b1=sc.nextInt() ;         int c1=b1/2;         int i =1 ;          while(i<=c1){              for( int j=1 ; j<=c1-i ; j++){                  System.out.print(" ");             }              for (int k=1; k<=a1; k++){                  System.out.print("=");              }              System.out.print("\n");             a1=a1+2;             i++;         }              }  }   a) provide commented code for the following code

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