Reverse words in a given string

 Problem statement:- Program to Reverse words in a given string.

Example:-

              Input: Given

                                 String=C STRING PROGRAM

             Output: PROGRAM STRING C

            Input: Given

                                String=c++ string question

             Output: question string c++

Data requirement:-

   Input Data:- str

  Output Data:-sub_str

  Additional Data:- i, p, in, arr, out

Program in C

Here is the source code of the C Program to Reverse words in a given string.

Code:

#include<stdio.h>

#include<string.h>

main()

{

    int in=0,out=0,p=0;

    char str[100]={0},sub_str[100][100]={0};

    printf("Enter your String:");

    gets(str);

    //splitting Input String into sub string

    while(str[p]!='\0')

    {

        out=0;

        while(str[p]!=' ' && str[p]!='\0')

        {

            sub_str[in][out]=str[p];

            p++;

            out++;

        }

        sub_str[in][out]='\0';

        in++;

        if(str[p]!='\0')

        {

            p++;

        }

    }

    printf("After reversing words in a given string is:");

     //Here 'in' variable count number of word present in the given string

    for(out=in-1;out>=0;out--){

    printf("%s ",sub_str[out]);

        }

}

Input/Output:

Enter your String:C STRING PROGRAM

After reversing words in a given string is:PROGRAM STRING C

Program in C++

Here is the source code of the C++ Program to Reverse words in a given string.

Code:

#include<iostream>

#include <cstring>

using namespace std;

main()

{

    string str;

    cout<<"Enter your String:";

    getline(cin,str);

    int in=0,out=0,p=0;

    int len=0;

    char sub_str[100][100]={0};

    for(in=0;str[in]!='\0';in++)

    {

        len++;

    }

    //splitting Input String into sub string

    while(str[p]!='\0')

    {

        out=0;

        while(str[p]!=' ' && str[p]!='\0')

        {

            sub_str[in][out]=str[p];

            p++;

            out++;

        }

        sub_str[in][out]='\0';

        in++;

        if(str[p]!='\0')

        {

            p++;

        }

    }

    cout<<"After reversing words in a given string is :";

     //Here 'in' variable count number of word present in the given string

    for(out=in-1;out>=0;out--){

   cout<<sub_str[out]<<" ";

        }

}

Input/Output:

Enter your String:c++ string question

After reversing words in a given string is :question string c++

Program in Java

Here is the source code of the Java Program to Reverse words in a given string.

Code:

import java.util.Scanner;

public class ReversingWords {

public static void main(String[] args) {

Scanner cs=new Scanner(System.in);

String str;

System.out.println("Enter your String:");

str=cs.nextLine();

//splitting Input String into sub string

String[] sub_str=str.split("\\s");

int out;

System.out.print("After reversing words in a given string is:");

     //Here 'in' variable count number of word present in the given string

    for(out=sub_str.length-1;out>=0;out--){

    System.out.print(sub_str[out]+" ");

        }

    cs.close();

}

}

Input/Output:

Enter your String:

reversing words in a given string

After reversing words in a given string is:string given a in words reversing 

Program in Python

Here is the source code of the Python Program to Reverse words in a given string.

Code:

str=input("Enter Your String:")

sub_str=str.split(" ")

print("After reversing words in a given string is:")

for out in range(len(sub_str)-1,-1,-1):

    print(sub_str[out],end=" ")

Input/Output:

Enter Your String:python string question

After reversing words in a given string is:

question string python 

More:-

C/C++/Java/Python Practice Question