solve hw-9

hws/tiktok_trends/VideoInfo.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <string>
+#include <algorithm>
+#include "Constants.h"
+
+struct VideoInfo {
+    const std::string* videoId = nullptr;
+    const std::string* coverUrl = nullptr;
+    const std::string* webVideoUrl = nullptr;
+    long playCount = 0;
+    int inputOrder = -1;
+
+    VideoInfo() = default;
+
+    VideoInfo(const std::string* id, const std::string* cover, const std::string* web,
+              long plays, int order)
+        : videoId(id), coverUrl(cover), webVideoUrl(web), playCount(plays), inputOrder(order) {}
+
+    static bool compareForFinalSort(const VideoInfo& a, const VideoInfo& b) {
+        if (a.playCount != b.playCount) return a.playCount > b.playCount;
+        if (a.videoId && b.videoId && *a.videoId != *b.videoId) return *a.videoId < *b.videoId;
+        return a.inputOrder < b.inputOrder;
+    }
+
+    bool operator<(const VideoInfo& other) const {
+         if (playCount != other.playCount) return playCount > other.playCount;
+         return inputOrder < other.inputOrder;
+    }
+};
+
+struct VideoCompareWorse {
+    bool operator()(const VideoInfo& a, const VideoInfo& b) const {
+        if (a.playCount != b.playCount) return a.playCount > b.playCount;
+        return a.inputOrder < b.inputOrder;
+    }
+};