Merge pull request #2126 from ash/ash-074

Move a C++ solution to its folder

1 files changed, 33 insertions, 0 deletions

diff --git a/challenge-074/ash/cpp/ch-1.cpp b/challenge-074/ash/cpp/ch-1.cpp
new file mode 100644
index 0000000000..74d78a32c3
--- /dev/null
+++ b/challenge-074/ash/cpp/ch-1.cpp
@@ -0,0 +1,33 @@
+/*
+    Task 1 from
+    https://perlweeklychallenge.org/blog/perl-weekly-challenge-074/
+
+    Comments: https://andrewshitov.com/2020/08/18/the-weekly-challenge-for-74/
+
+    Compile as:
+    $ g++ --std=c++17 ch-1.cpp
+*/
+
+#include <iostream>
+#include <vector>
+#include <map>
+#include <algorithm>
+
+using namespace std;
+
+int main() {
+    vector<int> data = {1, 2, 2, 3, 2, 4, 2};
+    // vector<int> data = {1, 3, 1, 2, 4, 5};
+
+    map<int, int> frequency;
+    int max_frequency = 0;
+    int major = 0;
+    for (auto x : data) {
+        if (++frequency[x] > max_frequency) {
+            max_frequency = frequency[x];
+            major = x;
+        }
+    }
+
+    cout << (max_frequency > data.size() / 2 ? major : -1) << endl;
+}