Swap corner words and reverse middle characters

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Write a Java program to take an input string and exchange the first and last word and reverse the middle word.

Examples:

Input : Hello World GFG Welcomes You
Output :You semocleW GFG dlroW Hello

Approach:

First we take two empty Strings and first String take the first word and second String takes the last word
When we iterate each word, then we must take care about the variable pointing to next word apart from the last word.
Now we reverse the left String in the given String.
After the above process, we first print last word and reverse of left Strings and after that the first word.

C++

// C++ Program to illustrate the solution
// of above problem
#include <iostream>
using namespace std;
 
void print(string s)
{
         
    // Taking an Empty String
    string fst = "";
    int i = 0;
    for (i = 0; i < s.length();) {
 
        // Iterating from starting index
        // When we get space, loop terminates
        while (s[i] != ' ') {
            fst = fst + s[i];
            i++;
        }
 
        // After getting one Word
        break;
    }
 
    // Taking an Empty String
    string last = "";
    int j = 0;
    for (j = s.length() - 1; j >= i;) {
 
        // Iterating from last index
        // When we get space, loop terminates
        while (s[j] != ' ') {
            last = s[j] + last;
            j--;
        }
 
        // After getting one Word
        break;
    }
 
    // Printing last word
    cout<<last;
    for (int m = j; m >= i; m--) {
 
        // Reversing the left characters
        cout<<s[m];
    }
 
    // Printing the first word
    cout<<fst;
}
 
int main() {
     
    string s = "Hello World GFG Welcomes You";
    print(s);
     
    return 0;
}
 
//This code is contributed by vt_m.

Java

// Java Program to illustrate the solution of above problem
public class ExchangeFirstLastReverseMiddle {
    static void print(String s)
    {
        // Taking an Empty String
        String fst = "";
        int i = 0;
        for (i = 0; i < s.length();) {
 
            // Iterating from starting index
            // When we get space, loop terminates
            while (s.charAt(i) != ' ') {
                fst = fst + s.charAt(i);
                i++;
            }
 
            // After getting one Word
            break;
        }
 
        // Taking an Empty String
        String last = "";
        int j = 0;
        for (j = s.length() - 1; j >= i;) {
 
            // Iterating from last index
            // When we get space, loop terminates
            while (s.charAt(j) != ' ') {
                last = s.charAt(j) + last;
                j--;
            }
 
            // After getting one Word
            break;
        }
 
        // Printing last word
        System.out.print(last);
        for (int m = j; m >= i; m--) {
 
            // Reversing the left characters
            System.out.print(s.charAt(m));
        }
 
        // Printing the first word
        System.out.println(fst);
    }
 
    public static void main(String[] args)
    {
        String s = "Hello World GFG Welcomes You";
        print(s);
    }
}

Python3

# Python3 Program to illustrate the solution
# of above problem
def Print(s) :
         
    # Taking an Empty String
    fst = ""
    i = 0
    while(i < len(s)) :
 
        # Iterating from starting index
        # When we get space, loop terminates
        while (s[i] != ' ') :
            fst = fst + s[i]
            i += 1
 
        # After getting one Word
        break
 
    # Taking an Empty String
    last = ""
    j = len(s) - 1
    while(j >= i) :
 
        # Iterating from last index
        # When we get space, loop terminates
        while (s[j] != ' ') :
            last = s[j] + last
            j -= 1
 
        # After getting one Word
        break
 
    # Printing last word
    print(last, end = "")
    m = j
    while m >= i :
       
        # Reversing the left characters
        print(s[m] , end = "")
        m -= 1
 
    # Printing the first word
    print(fst, end = "")
 
# Driver code
s = "Hello World GFG Welcomes You"
Print(s)
 
# This code is contributed by divyeshrabadiya07

C#

// C# Program to illustrate the
//solution of above problem
using System;
 
class ExchangeFirstLastReverseMiddle
{
    static void print(string s)
    {
        // Taking an Empty String
        string fst = "";
        int i = 0;
        for (i = 0; i < s.Length;) {
 
            // Iterating from starting index
            // When we get space, loop terminates
            while (s[i] != ' ')
            {
                fst = fst + s[i];
                i++;
            }
 
            // After getting one Word
            break;
        }
 
        // Taking an Empty String
        string last = "";
        int j = 0;
        for (j = s.Length - 1; j >= i;) {
 
            // Iterating from last index
            // When we get space, loop terminates
            while (s[j] != ' ') {
                last = s[j] + last;
                j--;
            }
 
            // After getting one Word
            break;
        }
 
        // Printing last word
        Console.Write(last);
        for (int m = j; m >= i; m--) {
 
            // Reversing the left characters
            Console.Write(s[m]);
        }
 
        // Printing the first word
        Console.Write(fst);
    }
 
    // Driver code
    public static void Main()
    {
        string s = "Hello World GFG Welcomes You";
        print(s);
    }
}
 
//This code is contributed by vt_m