Imprime las 3 strings dadas después de modificar y concatenar

Dadas tres strings (sin espacios). La tarea es imprimir la nueva string después de modificar las tres strings dadas de la siguiente manera: 
 

• Reemplace todas las vocales presentes en la primera string con «*».
• No cambies nada en la segunda string.
• Reemplace todas las consonantes en la tercera string con «$».
• Concatene las tres strings para obtener la nueva string.

Ejemplos: 
 

Input : how are you
Output : h*ware$ou

Input : geeks for geeks
Output : g**ksfor$ee$$

La idea es recorrer la primera string y seguir comprobando si algún carácter es vocal o no. Reemplace el carácter en la primera string que es vocal con «*». Del mismo modo, recorra la tercera string y siga comprobando si algún carácter no es una vocal. Si un carácter en la tercera string no es una vocal (entonces es una consonante), reemplácelo con ‘$’.
Finalmente, concatene las tres strings e imprima la string recién concatenada. 
 

// CPP program to modify the given strings
#include <iostream>
#include <string.h>
using namespace std;
 
// Function to modify the given three strings
string modifyStr(string str1, string str2, string str3)
{
    // Modifying first string
    for (int i = 0; i < str1.length(); i++) {
        if (str1[i] == 'a' || str1[i] == 'e' ||
            str1[i] == 'i' || str1[i] == 'o' ||
            str1[i] == 'u')
            str1[i] = '*';
    }
 
    // Modifying third string
    for (int i = 0; i < str3.length(); i++) {
        if (str3[i] != 'a' && str3[i] != 'e' &&
            str3[i] != 'i' && str3[i] != 'o' &&
            str3[i] != 'u')
            str3[i] = '$';
    }
 
    // Concatenating the three strings
    return (str1 + str2 + str3);
}
 
// Driver code
int main()
{
    string str1 = "how";
    string str2 = "are";
    string str3 = "you";
 
    cout << modifyStr(str1, str2, str3);
 
    return 0;
}

// JAVA program to modify the given Strings
class GFG
{
 
// Function to modify the given three Strings
static String modifyStr(String str1, String str2, String str3)
{
    // Modifying first String
    for (int i = 0; i < str1.length(); i++) {
        if (str1.charAt(i) == 'a' || str1.charAt(i) == 'e' ||
            str1.charAt(i) == 'i' || str1.charAt(i) == 'o' ||
            str1.charAt(i) == 'u')
            str1 = str1.substring(0, i)+ '*' +
                   str1.substring(i + 1);
    }
 
    // Modifying third String
    for (int i = 0; i < str3.length(); i++) {
        if (str3.charAt(i) != 'a' && str3.charAt(i) != 'e' &&
            str3.charAt(i) != 'i' && str3.charAt(i) != 'o' &&
            str3.charAt(i) != 'u')
            str3 = str3.substring(0, i)+ '$' +
                   str3.substring(i + 1);
    }
 
    // Concatenating the three Strings
    return (str1 + str2 + str3);
}
 
// Driver code
public static void main(String[] args)
{
    String str1 = "how";
    String str2 = "are";
    String str3 = "you";
 
    System.out.print(modifyStr(str1, str2, str3));
}
}
 
// This code is contributed by 29AjayKumar

# Python3 program to modify the given Strings
 
# Function to modify the given three Strings
def modifyStr(str1, str2, str3):
     
    # Modifying first String
    for i in range(len(str1)):
        if (str1[i] == 'a' or str1[i] == 'e' or
            str1[i] == 'i' or str1[i] == 'o'
            or str1[i] == 'u'):
            str1 = str1[0:i] + '*' + str1[i + 1:];
     
 
    # Modifying third String
    for i in range(len(str3)):
        if (str3[i] != 'a' and str3[i] != 'e' and
            str3[i] != 'i' and str3[i] != 'o'
            and str3[i] != 'u'):
            str3 = str3[0: i] + '$' + str3[i + 1:];
     
    # Concatenating the three Strings
    return (str1 + str2 + str3);
 
# Driver code
if __name__ == '__main__':
    str1 = "how";
    str2 = "are";
    str3 = "you";
 
    print(modifyStr(str1, str2, str3));
     
# This code is contributed by 29AjayKumar

// C# program to modify the given Strings
using System;
 
class GFG
{
 
// Function to modify the given three Strings
static String modifyStr(String str1, String str2, String str3)
{
    // Modifying first String
    for (int i = 0; i < str1.Length; i++)
    {
        if (str1[i] == 'a' || str1[i] == 'e' ||
            str1[i] == 'i' || str1[i] == 'o' ||
            str1[i] == 'u')
            str1 = str1.Substring(0, i)+ '*' +
                str1.Substring(i + 1);
    }
 
    // Modifying third String
    for (int i = 0; i < str3.Length; i++)
    {
        if (str3[i] != 'a' && str3[i] != 'e' &&
            str3[i] != 'i' && str3[i] != 'o' &&
            str3[i] != 'u')
            str3 = str3.Substring(0, i)+ '$' +
                str3.Substring(i + 1);
    }
 
    // Concatenating the three Strings
    return (str1 + str2 + str3);
}
 
// Driver code
public static void Main(String[] args)
{
    String str1 = "how";
    String str2 = "are";
    String str3 = "you";
 
    Console.Write(modifyStr(str1, str2, str3));
}
}
 
// This code is contributed by PrinciRaj1992

<script>
 
// Javascript program to modify the given Strings
 
// Function to modify the given three Strings
function modifyStr(str1, str2, str3)
{
    // Modifying first String
    for(var i = 0; i < str1.length; i++)
    {
        if (str1.charAt(i) == 'a' ||
            str1.charAt(i) == 'e' ||
            str1.charAt(i) == 'i' ||
            str1.charAt(i) == 'o' ||
            str1.charAt(i) == 'u')
            str1 = str1.substring(0, i) + '*' +
                   str1.substring(i + 1);
    }
 
    // Modifying third String
    for(var i = 0; i < str3.length; i++)
    {
        if (str3.charAt(i) != 'a' &&
            str3.charAt(i) != 'e' &&
            str3.charAt(i) != 'i' &&
            str3.charAt(i) != 'o' &&
            str3.charAt(i) != 'u')
            str3 = str3.substring(0, i) + '$' +
                   str3.substring(i + 1);
    }
 
    // Concatenating the three Strings
    return (str1 + str2 + str3);
}
 
// Driver code
var str1 = "how";
var str2 = "are";
var str3 = "you";
 
document.write(modifyStr(str1, str2, str3));
 
// This code is contributed by Ankita saini
 
</script>

h*ware$ou