Question

(Java Zybooks)

Given numRows and numColumns, print a list of all seats in a theater. Rows are numbered, columns lettered, as in 1A or 3E. Print a space after each seat, including after the last. Use separate print statements to print the row and column. Ex: numRows = 2 and numColumns = 3 prints:

1A 1B 1C 2A 2B 2C 

import java.util.Scanner;
public class NestedLoops {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
int numRows;
int numColumns;
int currentRow;
int currentColumn;
char currentColumnLetter;

numRows = scnr.nextInt();
numColumns = scnr.nextInt();

/* Your solution goes here */

System.out.println("");
}
}

Answer 1

Program:

import java.util.Scanner;

public class NestedLoops {
   public static void main (String [] args) {
       Scanner scnr = new Scanner(System.in);
       int numRows;
       int numColumns;
       int currentRow;
       int currentColumn;
       char currentColumnLetter;
       //read number of rows
       System.out.print("Enter number of rows: ");
       numRows = scnr.nextInt();
       //read number of columns
       System.out.print("Enter number of columns: ");
       numColumns = scnr.nextInt();

       /* Your solution goes here */
       System.out.println("");
       //loop that iterates through each row
       for (currentRow = 1; currentRow <= numRows; currentRow++)
       {
           //set the column letter to A
           currentColumnLetter = 'A';
           //loop that iterates through each column
           for (currentColumn = 1; currentColumn <= numColumns; currentColumn++)
           {
               //print the row number
               System.out.print("" + currentRow);
               //print the column letter followed by space
               System.out.print(currentColumnLetter + " ");
               //increment currentColumnLetter
               currentColumnLetter++;
           }
       }
   }
}

Output:

console X <terminated> NestedLoops [Java Application] CProgram Fi Enter number of rows: 2 Enter number of columns: 3 1A 1B 1C 2A 2B 2C

Console 3 <terminated> Nestedloops Java Application] C: Program F Enter number of rows: 2 Enter number of columns: 5 1A 1B 1C 1D 1E 2A 2B 2C 2D 2E

Program Screenshot:

NestedLoops.java 3 1 import java.util.Scanner; 2 3 public class NestedLoops { 4 public static void main (String [] args) Scanner scnr = new Scanner(System.in); int numRows; int numColumns; int currentRow; int currentColumn; 6 7 8 9 char current ColumnLetter; //read number of rows 10 System.out.print("Enter number of rows: "); numRows scnr.nextInt(); //read number of columns 12 13 14 System.out.print("Enter number of columns: "); numColumnsscnr.nextInt(); 15 16 17 Your solution goes here*/ System.out.println(" //loop that iterates through each row for (currentRow1; currentRow <numRows; currentRow++) 18 19 20 21 //set the column letter to A currentColumn Letter = 'A'; //loop that iterates through each column for (currentColumn 1; currentColumn <= numColumns; currentColumn++) 23 24 25 26 27 //print the row number System.out.print(currentRow); //print the column letter followed by space System.out.print(currentColumnLetter ""); //increment currentColumnLetter currentColumnLetter++; 28 29 30 31 32 34 35 36 37