Adds reversing th vowels from string

Author: omonimus1

c++/reversing-the-vowels.cpp

@@ -0,0 +1,51 @@
+//  https://practice.geeksforgeeks.org/problems/reversing-the-vowels/0/?problemStatus=unsolved&difficulty[]=-2&page=1&sortBy=submissions&query=problemStatusunsolveddifficulty[]-2page1sortBysubmissions
+#include <bits/stdc++.h>
+using namespace std;
+
+bool is_vowel[CHAR_MAX] = { false }; // initializes all values to false
+
+void InitializeVowels(string set_of_patterns)
+{
+    for(int i =0; i < set_of_patterns.size(); i++)
+    {
+        is_vowel[(int)set_of_patterns[i]] = true; 
+    }
+}
+
+string ReverseVowels(string word)
+{
+    string vowels = "";
+    int len = word.size(); 
+    for(int i =0;  i< len; i++)
+    {
+        if(is_vowel[(int)word[i]])
+            vowels += word[i];
+    }
+    reverse(vowels.begin(), vowels.end());
+    int start = 0; 
+    for(int i =0; i < len; i++)
+    {
+        if(is_vowel[(int)word[i]])
+        {
+            word[i] = vowels[start];
+            start++; 
+        }
+    }
+    return word; 
+}
+
+int main()
+{
+    ios_base::sync_with_stdio(false);
+    cin.tie(NULL);
+    InitializeVowels("aeiouAEIOU");
+    long int t;
+    cin >>t; 
+    while(t--)
+    {
+        string word; 
+        cin >> word; 
+        cout << ReverseVowels(word) <<endl;
+    }
+    return 0;
+}