Question

Problem 1: Dynamic Grocery Array

Using Java to write a program that prompts the user to enter an item’s name for each position in the array. The program then prints uses a loop to output the array.

Example

1: Banana
2: Orange
3: Milk
4: Carrot
5: Chips
Banana, Orange, Milk, Carrot, Chips

Problem 2: Print Characters in String Array   

Declare a string array of size 5. Prompt the user enters five strings that are stored in the array. Using Java to write a function that prints a string in a reverse order. The function must use loop to reverse a string. Call that function from the main and output the value.

Hint: An array of string is like working with multi-dimensional array.

Example

Enter five items.
Item 1: hello
Item 2: C++
Item 3: Wednesday
Item 4: It’s a great day
Item 5: goodbyeReverse strings:
Item 1: olleh
Item 2: ++C
Item 3: yadsendeW
Item 4: yad taerg a s’tI
Item 5: eybdoog

Answer 1

1.

import java.util.Scanner;
public class Main{

public static void main(String []args){
int n=5;
String[] strArray = new String[5];
System.out.println("Enter five items: ");
for(int i=0;i<n;i++)
{
Scanner in = new Scanner(System.in);
strArray[i] = in.nextLine();
}
for(int i=0;i<n-1;i++)
{
System.out.print( strArray[i] + ", ");
}
System.out.println( strArray[n-1]);
  
}
}

2.

import java.util.Scanner;
public class Main {
   public static void reverse (String input)
{   
char[] cha = input.toCharArray();
for (int i = cha.length-1; i>=0; i--)
System.out.print(cha[i]);
}
   public static void main(String []args){
   int n=5;
   String[] strArray = new String[5];
   System.out.println("Enter five items: ");
   for(int i=0;i<n;i++)
   {
   Scanner in = new Scanner(System.in);
   strArray[i] = in.nextLine();
   }
   for(int i=1;i<n;i++)
   {     
   System.out.println( "Item "+ i + ": " +strArray[i-1] );
   }
   System.out.print( "Item "+ 5 + ": " +strArray[4] );
   System.out.println("Reverse strings:");
   for(int i=1;i<=n;i++)
   {  
       System.out.print( "Item "+ i + ": ");
       reverse(strArray[i-1]);
       System.out.println("");
   }
   }
}
If you have any doubt in code feel free to ask in comments.