Merge pull request #1 from Shordore/Open-source-Contribution-1

Frequency of an element in an array C++. Issue MakeContributions#1285.

Frequency_Element.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+#include <vector>
+#include <unordered_map>
+
+std::unordered_map<int, int> FrequencyElement(const std::vector<int>& nums) {
+    std::unordered_map<int, int> un_map;
+
+    for (int i : nums) {
+        un_map[i]++;
+    }
+
+    return un_map;
+}
+
+
+int main() {
+    std::vector<int> inputArray = {1, 2, 3, 1, 2, 1, 4, 5, 4, 3};
+
+    std::unordered_map<int, int> result = FrequencyElement(inputArray);
+
+    for (const auto& pair : result) {
+        std::cout << "Element: " << pair.first << ", Frequency: " << pair.second << std::endl;
+    }
+
+    return 0;
+}