Reverse middle words of a string

Given a string str, print reverse all words except the first and last words.

Examples:

Input  : Hi how are you geeks 
Output  : Hi woh era uoy geeks

Input : I am fine
Output : I ma fine
  1. Print the first word.
  2. For remaining middle words, print reverse of every word after reaching end of it. This will print reverse of all words except the last word.
  3. Print last word.

C++

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// CPP program to print reverse of all words
// except the corner words.
#include <bits/stdc++.h>
using namespace std;
  
void printReverse(string str)
{
    // Print first word
    int i = 0;
    for (i = 0; i < str.length() && str[i] != ' '; i++)
        cout << str[i];
  
    // Print middle words
    string word = "";
    for (; i < str.length(); i++) {
  
        if (str[i] != ' ')
            word += str[i];
        else {
            reverse(word.begin(), word.end());
            cout << word << " ";
            word = "";
        }
    }
  
    // Print last word
    cout << word << " ";
}
  
int main()
{
    string str = "Hi how are you geeks";
    printReverse(str);
    return 0;
}

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Java

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// Java program to print reverse of all words 
// except the corner words. 
  
public class GFG{
  
static void printReverse(String str) 
    
        // Print first word 
        int i = 0
        for (i = 0; i < str.length() && str.charAt(i) != ' '; i++) 
            System.out.print(str.charAt(i)) ;
      
        // Print middle words 
        String word = ""
          
          
        for (; i < str.length(); i++) { 
      
            if (str.charAt(i) != ' '
                word += str.charAt(i);
                  
            else
                    System.out.print(new StringBuilder(word).
                                reverse().toString() + " ");
                    word = ""
            
        
      
        // Print last word 
        System.out.print(word + " "); 
    
      
    public static void main(String []args) 
    
        String str = "Hi how are you geeks"
        printReverse(str); 
    
  
// This code is contributed by Ryuga 
}

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Python3

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# Python3 program to print reverse of all words
# except the corner words.
def printReverse(s):
  
    #Taking all the words in a list
    l = [s for s in s.split(' ')] 
  
    #printing the first word as it is
    print(l[0], end = ' ')
  
      
    for i in range(1, len(l)-1):
  
        #printing middle words reversed
        print(l[i][::-1], end = ' ')
  
    #printing the last word as it is
    print(l[len(l)-1])
  
s = "Hi how are you geeks"
printReverse(s)

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C#

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// C# program to print reverse of all words 
// except the corner words. 
using System;
using System.Text; 
  
class GFG
{
  
    static void printReverse(String str) 
    
        // Print first word 
        int i = 0; 
        for (i = 0; i < str.Length && str[i] != ' '; i++) 
            Console.Write(str[i]) ;
      
        // Print middle words 
        String word = ""
          
          
        for (; i < str.Length; i++)
        
      
            if (str[i] != ' '
                word += str[i];
                  
            else 
            
                word = reverse(word);
                    Console.Write(new StringBuilder(word).ToString() + " ");
                    word = ""
            
        
      
        // Print last word 
        Console.Write(word + " "); 
    
    static String reverse(String input)
    {
        char[] temparray = input.ToCharArray();
        int left, right = 0;
        right = temparray.Length - 1;
  
        for (left = 0; left < right; left++, right--) 
        {
            // Swap values of left and right 
            char temp = temparray[left];
            temparray[left] = temparray[right];
            temparray[right] = temp;
        }
        return String.Join("",temparray);
    
      
    // Driver code
    public static void Main(String []args) 
    
        String str = "Hi how are you geeks"
        printReverse(str); 
    
}
  
// This code contributed by Rajput-Ji

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PHP

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<?php 
// PHP program to print reverse of all 
// words except the corner words.
function printReverse($str)
{
    // Print first word
    $i = 0;
    for ($i = 0; $i < strlen($str) && 
                 $str[$i] != ' '; $i++)
        echo $str[$i];
  
    // Print middle words
    $word = "";
    for (; $i < strlen($str); $i++)
    {
  
        if ($str[$i] != ' ')
            $word = $word.$str[$i];
        else 
        {
            $word = strrev($word);
            echo $word . " ";
            $word = "";
        }
    }
  
    // Print last word
    echo $word . " ";
}
  
// Driver Code
$str = "Hi how are you geeks";
printReverse($str);
  
// This code is contributed
// by ChitraNayal
?>

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Output:

Hi woh era uoy geeks

Time Complexity : O(n)
Auxiliary Space : O(L) where L is length of the longest word in the string.



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