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+/*
+Challenge 245
+
+Task 1: Sort Language
+Submitted by: Mohammad S Anwar
+
+You are given two array of languages and its popularity.
+
+Write a script to sort the language based on popularity.
+Example 1
+
+Input: @lang = ('perl', 'c', 'python')
+       @popularity = (2, 1, 3)
+Output: ('c', 'perl', 'python')
+
+Example 2
+
+Input: @lang = ('c++', 'haskell', 'java')
+       @popularity = (1, 3, 2)
+Output: ('c++', 'java', 'haskell')
+*/
+
+#include <algorithm>
+#include <iostream>
+#include <string>
+#include <vector>
+using namespace std;
+
+struct Elem {
+    string name;
+    int pop;
+
+    Elem(const string& name_ = "", int pop_ = 0) :name(name_), pop(pop_) {}
+    bool operator<(const Elem& other) { return pop < other.pop ? true : false; }
+};
+
+int main(int argc, char* argv[]) {
+    if (argc < 2) {
+        cerr << "Usage: ch-1 lang pop lang pop ..." << endl;
+        exit(EXIT_FAILURE);
+    }
+
+    vector<Elem> langs;
+    for (int i = 1; i + 1 < argc; i += 2) {
+        langs.emplace_back(argv[i], atoi(argv[i + 1]));
+    }
+
+    sort(langs.begin(), langs.end());
+
+    for (auto& lang : langs)
+        cout << lang.name << " ";
+    cout << endl;
+}