Encoding a sentence into Pig Latin

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Design a program to take a sentence as an input, and then encode it into Pig Latin.

A Pig Latin is an encrypted word in English, generated by placing the first letter of each word at the end, and then adding “ay” to the end.

Examples:

Input: s = “nevermind youve got them”
Output: “evermindnay ouveyay otgay hemtay”

Input: s = “sally knows best”
Output: “allysay nowskay estbay”

Approach: The problem can be solved by traversing the sentence and making the changes word by word, as follows:

Find the index of the first letter of the word.
Create a Pig Latin by appending the following these steps:
- Append the first letter at the end of the substring of the word.
- Add “ay” after appending the first letter.
Continue the above steps till the last word in the string.

Below is the java program to implement the approach:

C++

#include <bits/stdc++.h> 
using namespace std; 
  
string pigLatinSentence(string s){ 
  string ans = ""; 
  for (int i = 0; i < s.length(); i++) { 
    int j = i; 
    if (i >= s.length()) 
      break; 
    while (i < s.length() && s[i] != ' ') 
      i++; 
    if (ans.length() == 0) { 
      ans.append(s.substr(j + 1,  i - j - 1) + s[j] + "ay"); 
    } 
    else { 
      ans.append(" " + s.substr(j + 1,  i - j - 1) + s[j] + "ay"); 
    } 
  } 
  return ans; 
} 
  
// Driver code 
int main() { 
  
  string s = "sally knows best"; 
  cout << (pigLatinSentence(s)); 
  return 0; 
} 
  
// This code is contributed by hrithikgarg03188.

Java

// Java program to implement 
// the above approach 
import java.io.*; 
  
class GFG { 
  
    public static String pigLatinSentence(String s) 
    { 
        String ans = ""; 
        for (int i = 0; i < s.length(); i++) { 
            int j = i; 
            if (i >= s.length()) 
                break; 
            while (i < s.length() && s.charAt(i) != ' ') 
                i++; 
            if (ans.isEmpty()) { 
                ans = ans.concat( 
                    s.substring(j + 1, i) 
                    + s.charAt(j) + "ay"); 
            } 
            else { 
                ans = ans.concat( 
                    " " + s.substring(j + 1, i) 
                    + s.charAt(j) + "ay"); 
            } 
        } 
        return ans; 
    } 
  
    // Driver code 
    public static void main(String[] args) 
    { 
        String s = "sally knows best"; 
        System.out.println(pigLatinSentence(s)); 
    } 
}

Python3

# Python program to implement 
# the above approach 
def pigLatinSentence(s): 
    ans = ""; 
    i =0; 
    for i1 in range(len(s)): 
        j = i; 
        if (i >= len(s)): 
            break; 
        while (i < len(s) and s[i] != " "): 
            i += 1; 
        if (len(ans) == 0): 
            ans = s[j + 1: i] + str(s[j:j+1]) + "ay"; 
        else: 
            ans += " " + s[j + 1: i] + str(s[j:j+1]) + "ay"; 
        i += 1; 
  
    return ans; 
  
# Driver code 
if __name__ == '__main__': 
    s = "sally knows best"; 
    print(pigLatinSentence(s)); 
  
# This code is contributed by 29AjayKumar

C#

// C# program to implement 
// the above approach 
using System; 
  
class GFG { 
  
    public static string pigLatinSentence(string s) 
    { 
        string ans = ""; 
        for (int i = 0; i < s.Length; i++) { 
            int j = i; 
            if (i >= s.Length) 
                break; 
            while (i < s.Length && s[i] != ' ') 
                i++; 
            if (ans.Length == 0) { 
                ans = ans + s.Substring(j + 1, i - j - 1) 
                      + s[j] + "ay"; 
            } 
            else { 
                ans = ans + " "
                      + s.Substring(j + 1, i - j - 1) + s[j] 
                      + "ay"; 
            } 
        } 
        return ans; 
    } 
  
    // Driver code 
    public static void Main(string[] args) 
    { 
        string s = "sally knows best"; 
        Console.WriteLine(pigLatinSentence(s)); 
    } 
} 
  
// This code is contributed by ukasp.

Javascript

<script> 
    // JavaScript program to implement 
    // the above approach 
  
    const pigLatinSentence = (s) => { 
        let ans = ""; 
        for (let i = 0; i < s.length; i++) { 
            let j = i; 
            if (i >= s.length) 
                break; 
            while (i < s.length && s.charAt(i) != ' ') 
                i++; 
            if (ans.length === 0) { 
                ans = ans + s.substring(j + 1, i) + s.charAt(j) + "ay"; 
            } 
            else { 
                ans = ans + " " + s.substring(j + 1, i) + s.charAt(j) + "ay"; 
            } 
        } 
        return ans; 
    } 
  
    // Driver code 
  
    let s = "sally knows best"; 
    document.write(pigLatinSentence(s)); 
  
    // This code is contributed by rakeshsahni 
  
</script>

Output:

allysay nowskay estbay

Time Complexity: O(N), where N is the length of sentence
Auxiliary Space: O(N)

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