Put spaces between words starting with capital letters

You are given an array of characters which is basically a sentence. However there is no space between different words and the first letter of every word is in uppercase. You need to print this sentence after following amendments:
(i) Put a single space between these words.
(ii) Convert the uppercase letters to lowercase.

Examples:

Input : BruceWayneIsBatman
Output : bruce wayne is batman

Input :  You
Output :  you

Recommended: Please solve it on “PRACTICE” first, before moving on to the solution.

We check if the current character is in uppercase then print ” “(space) and convert it into lowercase.

C/C++

// C++ program to put spaces between words starting 
// with capital letters. 
#include <iostream> 
using namespace std; 
  
// Function to amend the sentence 
void amendSentence(string str) 
{ 
    // Traverse the string 
    for(int i=0; i < str.length(); i++) 
    { 
        // Convert to lowercase if its 
        // an uppercase character 
        if (str[i]>='A' && str[i]<='Z') 
        { 
            str[i]=str[i]+32; 
  
            // Print space before it 
            // if its an uppercase character 
            if (i != 0) 
                cout << " "; 
  
            // Print the character 
            cout << str[i]; 
        } 
  
        // if lowercase character 
        // then just print 
        else
            cout << str[i]; 
    } 
} 
  
// Driver code 
int main() 
{ 
    string str ="BruceWayneIsBatman"; 
    amendSentence(str); 
    return 0; 
} 

Java

// Java program to put spaces between words starting 
// with capital letters. 
  
import java.util.*; 
import java.lang.*; 
import java.io.*; 
  
class AddSpaceinSentence 
{ 
    // Function to amend the sentence 
    public static void amendSentence(String sstr) 
    { 
        char[] str=sstr.toCharArray(); 
          
        // Traverse the string 
        for (int i=0; i < str.length; i++) 
        { 
            // Convert to lowercase if its 
            // an uppercase character 
            if (str[i]>='A' && str[i]<='Z') 
            { 
                str[i] = (char)(str[i]+32); 
                  
                // Print space before it 
                // if its an uppercase character 
                if (i != 0) 
                    System.out.print(" "); 
      
                // Print the character 
                System.out.print(str[i]); 
            } 
      
            // if lowercase character 
            // then just print 
            else
            System.out.print(str[i]); 
        } 
    }      
      
    // Driver Code 
    public static void main (String[] args)  
    { 
        String str ="BruceWayneIsBatman"; 
        amendSentence(str); 
    } 
} 

Python3

# Python3 program to put spaces between words  
# starting with capital letters. 
  
# Function to amend the sentence 
def amendSentence(string): 
    string = list(string) 
  
    # Traverse the string 
    for i in range(len(string)): 
  
        # Convert to lowercase if its 
        # an uppercase character 
        if string[i] >= 'A' and string[i] <= 'Z': 
            string[i] = chr(ord(string[i]) + 32) 
  
            # Print space before it 
            # if its an uppercase character 
            if i != 0: 
                print(" ", end = "") 
  
            # Print the character 
            print(string[i], end = "") 
  
        # if lowercase character 
        # then just print 
        else: 
            print(string[i], end = "") 
  
# Driver Code 
if __name__ == "__main__": 
    string = "BruceWayneIsBatman"
    amendSentence(string) 
  
# This code is conributed by 
# sanjeev2552 

C#

// C# program to put spaces between words 
// starting with capital letters. 
using System; 
          
public class GFG { 
      
    // Function to amend the sentence 
    public static void amendSentence(string sstr) 
    { 
        char[] str = sstr.ToCharArray(); 
          
        // Traverse the string 
        for (int i = 0; i < str.Length; i++) 
        { 
              
            // Convert to lowercase if its 
            // an uppercase character 
            if (str[i] >= 'A' && str[i] <= 'Z') 
            { 
                str[i] = (char)(str[i] + 32); 
                  
                // Print space before it 
                // if its an uppercase 
                // character 
                if (i != 0) 
                    Console.Write(" "); 
      
                // Print the character 
                Console.Write(str[i]); 
            } 
      
            // if lowercase character 
            // then just print 
            else
                Console.Write(str[i]); 
        } 
    }  
      
    // Driver Code 
    public static void Main ()  
    { 
        string str ="BruceWayneIsBatman"; 
          
        amendSentence(str); 
    } 
          
} 
  
// This code is contributed by Sam007. 

Output:

bruce wayne is batman

This article is contributed by Sahil Chhabra. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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My Personal Notes

Recommended: Please solve it on “PRACTICE” first, before moving on to the solution.

C/C++

Java

Python3

C#

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