Program to Find Reverse of a String

by Online Tutorials Library July 22, 2014

Program to find reverse of a string

Explanation

In this program, we need to find the reverse of the string. This can be done by iterating the string backward and storing each character from the original string into a new string.

Algorithm

Define a string and another empty string to store the reversed string.
Now, iterate the string from last and store a character from back into variable revString.
At the end of the loop, revString will hold the reverse of the string.

Solution

Python

  string = “Dream big”;  #Stores the reverse of given string  reversedStr = “”;     #Iterate through the string from last and add each character to variable reversedStr  for i in range(len(string)-1, -1, -1):      reversedStr = reversedStr + string[i];        print(“Original string: ” + string);  #Displays the reverse of given string  print(“Reverse of given string: ” + reversedStr);  

Output:

Original string: Dream big  Reverse of given string: gib maerD

C

  #include <stdio.h>  #include <string.h>     int main()  {      char string[] = “Dream big”;      //Stores the reverse of given string      char reversedStr[strlen(string)];      int j = 0;            //Iterate through the string from last and add each character to variable reversedStr      for(int i = strlen(string)-1; i >= 0; i–){          reversedStr[j++] = string[i];      }      reversedStr[j] = ‘�’;            printf(“Original string: %s”, string);      //Displays the reverse of given string      printf(“nReverse of given string: %s”, reversedStr);         return 0;  }  

Output:

Original string: Dream big  Reverse of given string: gib maerD

JAVA

  public class Reverse  {      public static void main(String[] args) {          String string = “Dream big”;          //Stores the reverse of given string          String reversedStr = “”;                    //Iterate through the string from last and add each character to variable reversedStr          for(int i = string.length()-1; i >= 0; i–){              reversedStr = reversedStr + string.charAt(i);          }                    System.out.println(“Original string: ” + string);          //Displays the reverse of given string          System.out.println(“Reverse of given string: ” + reversedStr);      }  }  

Output:

Original string: Dream big  Reverse of given string: gib maerD

C#

  using System;                        public class Reverse  {      public static void Main()      {          String string1 = “Dream big”;          //Stores the reverse of given string          String reversedStr = “”;                    //Iterate through the string from last and add each character to variable reversedStr          for(int i = string1.Length-1; i >= 0; i–){              reversedStr = reversedStr + string1[i];          }                    Console.WriteLine(“Original string: ” + string1);          //Displays the reverse of given string          Console.WriteLine(“Reverse of given string: ” + reversedStr);      }  }  

Output:

Original string: Dream big  Reverse of given string: gib maerD

PHP

  <!DOCTYPE html>  <html>  <body>  <?php  $string = “Dream big”;  //Stores the reverse of given string  $reversedStr = “”;     //Iterate through the string from last and add each character to variable reversedStr  for($i = strlen($string)-1; $i >= 0; $i–){      $reversedStr = $reversedStr . $string[$i];  }     print(“Original string: ” . $string);  //Displays the reverse of given string  print(“<br>Reverse of given string: ” . $reversedStr);  ?>  </body>  </html>  

Output:

Original string: Dream big  Reverse of given string: gib maerD

Next Topic#

Program to Find Reverse of a String

Program to find reverse of a string

Explanation

Algorithm

Solution

Python

C

JAVA

C#

PHP

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