Add a C++ solution for ademclk#34

challenge/remove_duplicate_elements/solution.cpp

@@ -0,0 +1,27 @@
+#include "solution.h"
+
+std::vector<int> remove_dupes(std::vector<int> const &vec) {
+    std::unordered_set<int> seen;
+    std::vector<int> uniques;
+
+    for (auto const &num : vec) {
+        if (seen.count(num) == 0) {
+            uniques.push_back(num);
+            seen.insert(num);
+        }
+    }
+
+    return uniques;
+}
+
+/*
+int main() {
+    std::vector<int> test = {1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 2, 2, 2, 2, 3, 4, 5};
+    auto temp = remove_dupes(test);
+
+    // Output -> 1 2 3 4 5
+    for (auto const &num : temp) {
+        std::cout << num << " ";
+    }
+}
+*/

challenge/remove_duplicate_elements/solution.h

@@ -0,0 +1,19 @@
+#ifndef REM_DUP_H
+#define REM_DUP_H
+
+//#include <iostream>
+#include <unordered_set>
+#include <vector>
+
+/**
+ * @brief Function to remove all duplicate elements from a vector.
+ * Iterates over the elements and records the ones it sees.
+ * Adds previously unseen elements to a new vector.
+ * Returns this vector.
+ *
+ * @param vec The vector to remove the duplicates from
+ * @return A vector with no duplicate elements.
+ */
+std::vector<int> remove_dupes(std::vector<int> const &vec);
+
+#endif