Write the WordSandwich method allSandwiches. This method creates and returns a new array of String objects as follows. Each element of the array will be a sandwich of str1 and str2: that is the characters of str2 are inserted into str1. The first String in the array consists of 1 letter of str1 followed by str2, followed by the rest of the letters of str1. For each subsequent String in the array the position in str1 where str2 starts is shifted by 1 until the final string in the array which consists of all but 1 letter of str1 followed by str2, followed by the final remaining letter of str1. For example, the call allSandwiches("bread", "ham") will return the following array.

import java.util.*;

class Main

{

private String[] totalSandwiches(String string1,String string2)

{

int totalElements = string1.length()-1;

String ans[] = new String[totalElements];

for(int i=0;i<totalElements;i++)

{

String temp = "";

for(int j=0;j<=i;j++)

{

temp+=string1.charAt(j);

}

temp+=string2;

for(int j=i+1;j<string1.length();j++)

{

temp+=string1.charAt(j);

}

ans[i] = temp;

}

return ans;

}

public static void main(String[] args)

{

Scanner sc = new Scanner(System.in);

Main obj = new Main();

String string1,string2;

System.out.print("Enter the 1st String: ");

string1 = sc.nextLine();

while(string1.length()<2)

{

System.out.print("The size of string 1 should be atleast 2 to make a sandwich. Enter the string again: ");

string1 = sc.nextLine();

}

System.out.print("Enter the 2nd String: ");

string2 = sc.nextLine();

while(string2.length()==0)

{

System.out.print("The size of string 2 should be atleast 1 to make a sandwich. Enter the string again: ");

string2 = sc.nextLine();

}

System.out.println("Following are the sandwiches: ");

String ans[] = obj.totalSandwiches(string1,string2);

for(int i=0;i<ans.length;i++)

{

System.out.println(ans[i]);

}

}

}

Explanation:

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