Added Frequency of each elements

Author: asknkitkr

FrequencyEachElement.cpp

@@ -0,0 +1,44 @@
+#include<iostream>
+#include<vector>
+using namespace std;
+
+void frequency(vector<int>& arr) {
+    int size = arr.size();
+
+    vector<bool> visited(size, false);
+
+    for(int i = 0; i < size; i++) {
+        if(visited[i] == true) continue;
+
+        int count = 1;
+        for(int  j = i+1; j < size; j++) {
+            if(arr[i] == arr[j]) {
+                visited[j] = true;
+                count++;
+            }
+        }
+        cout << arr[i] << ": " << count << endl;
+    }
+}
+
+int main() {
+    vector<int> a1 = {1,1,1,3,4,5,6,6,5,4,6,7,4,3,3};
+    cout << "CASE #1: ";
+    for(int e: a1) cout << e << " ";
+    cout << endl;
+    frequency(a1);
+
+    vector<int> a2 = {45,56,3,3,4,5,7,8,8,34,3,5,235,2,35,25,236,2,35,26,23,34};
+    cout << "\nCASE #2: ";
+    for(int e: a2) cout << e << " ";
+    cout << endl;
+    frequency(a2);
+
+    vector<int> a3 = {435,5,23,2,35,23,5,25,6,7,3,7,456,345,435,2};
+    cout << "\nCASE #3: ";
+    for(int e: a3) cout << e << " ";
+    cout << endl;
+    frequency(a3);
+
+    return 0;
+}