Update odd_even_sort.cpp

Updated the odd even sort code with comments and simplified it to its most basic form.

sorting/odd_even_sort.cpp

@@ -1,53 +1,66 @@
-/* C++ implementation Odd Even Sort */
 #include <iostream>
 #include <vector>
-
 using namespace std;
 
-void oddEven(vector<int> &arr, int size) {
-    bool sorted = false;
+/**
+ * @brief Odd-Even Sort function
+ * @param arr The array to be sorted
+ * @param size The size of the array
+ */
+void oddEvenSort(vector<int> &arr, int size) {
+    bool sorted = false;  // Initially, the array is assumed to be unsorted
     while (!sorted) {
-        sorted = true;
-        for (int i = 1; i < size - 1; i += 2)  // Odd
-        {
+        sorted = true;  // Assume the array is sorted
+
+        // Perform Bubble sort on odd indexed elements
+        for (int i = 1; i < size - 1; i += 2) {
             if (arr[i] > arr[i + 1]) {
-                swap(arr[i], arr[i + 1]);
-                sorted = false;
+                swap(arr[i], arr[i + 1]);  // Swap if the current element is greater than the next
+                sorted = false;  // If a swap is made, array is not sorted yet
             }
         }
 
-        for (int i = 0; i < size - 1; i += 2)  // Even
-        {
+        // Perform Bubble sort on even indexed elements
+        for (int i = 0; i < size - 1; i += 2) {
             if (arr[i] > arr[i + 1]) {
-                swap(arr[i], arr[i + 1]);
-                sorted = false;
+                swap(arr[i], arr[i + 1]);  // Swap if the current element is greater than the next
+                sorted = false;  // If a swap is made, array is not sorted yet
             }
         }
     }
 }
 
-void show(vector<int> A, int size) {
-    int i;
-    for (i = 0; i < size; i++) cout << A[i] << "\n";
+/**
+ * @brief Display function to print the array
+ * @param arr The array to be displayed
+ * @param size The size of the array
+ */
+void display(const vector<int> &arr, int size) {
+    for (int i = 0; i < size; i++) {
+        cout << arr[i] << "\n";  // Print each element of the array
+    }
 }
 
 int main() {
     int size, temp;
-    cout << "\nEnter the number of elements : ";
+    cout << "Enter the number of elements: ";
     cin >> size;
 
-    vector<int> arr;
-
-    cout << "\nEnter the unsorted elements : \n";
+    vector<int> arr(size);  // Create a vector of input size
 
+    cout << "Enter the unsorted elements:\n";
     for (int i = 0; i < size; ++i) {
-        cin >> temp;
-        arr.push_back(temp);
+        cin >> arr[i];  // Take input from the user
     }
 
-    oddEven(arr, size);
+    oddEvenSort(arr, size);  // Call the odd-even sort function
+
+    cout << "Sorted array:\n";
+    display(arr, size);  // Display the sorted array
 
-    cout << "Sorted array\n";
-    show(arr, size);
     return 0;
 }
+/*
+oddEvenSort: This function implements the Odd-Even Sort algorithm. It sorts the array by first processing the odd indices and then the even indices until no swaps are required.
+display: A simple function to print the sorted array.
+Main Function: Takes input from the user, calls the sorting function, and displays the sorted result. */