add my impression

14_Git.cpp

@@ -0,0 +1,91 @@
+#include <iostream>
+#include <vector>
+#include <cmath>
+#include <algorithm>
+
+// 関数宣言
+double calculateMean(const std::vector<int>& scores);
+double calculateStandardDeviation(const std::vector<int>& scores, double mean);
+void calculateZScores(const std::vector<int>& scores, double mean, double stdDev, std::vector<double>& zScores);
+void printResults(const std::vector<int>& scores, const std::vector<double>& zScores, const std::string& subject);
+
+int main() {
+    // テストの点数データ
+    std::vector<int> scienceScores = {65, 80, 67, 35, 58, 60, 72, 75, 68, 92, 36, 50, 25, 85, 46, 42, 78, 62, 84, 70};
+    std::vector<int> englishScores = {44, 87, 100, 63, 52, 60, 58, 73, 55, 86, 29, 56, 89, 23, 65, 84, 64, 27, 86, 84};
+
+    // 平均点の計算
+    double scienceMean = calculateMean(scienceScores);
+    double englishMean = calculateMean(englishScores);
+
+    // 標準偏差の計算
+    double scienceStdDev = calculateStandardDeviation(scienceScores, scienceMean);
+    double englishStdDev = calculateStandardDeviation(englishScores, englishMean);
+
+    // 偏差値の計算
+    std::vector<double> scienceZScores;
+    calculateZScores(scienceScores, scienceMean, scienceStdDev, scienceZScores);
+
+    std::vector<double> englishZScores;
+    calculateZScores(englishScores, englishMean, englishStdDev, englishZScores);
+
+    // 結果の表示
+    printResults(scienceScores, scienceZScores, "Science");
+    printResults(englishScores, englishZScores, "English");
+
+    return 0;
+}
+
+// 平均点の計算
+double calculateMean(const std::vector<int>& scores) {
+    int sum = 0;
+    for (int score : scores) {
+        sum += score;
+    }
+    return static_cast<double>(sum) / scores.size();
+}
+
+// 標準偏差の計算
+double calculateStandardDeviation(const std::vector<int>& scores, double mean) {
+    double sumSquaredDifferences = 0;
+    for (int score : scores) {
+        double difference = score - mean;
+        sumSquaredDifferences += difference * difference;
+    }
+    return sqrt(sumSquaredDifferences / scores.size());
+}
+
+// 偏差値の計算
+void calculateZScores(const std::vector<int>& scores, double mean, double stdDev, std::vector<double>& zScores) {
+    zScores.clear();
+    for (int score : scores) {
+        double zScore = (score - mean) / stdDev * 10 + 50;
+        zScores.push_back(zScore);
+    }
+}
+
+// 結果の表示
+void printResults(const std::vector<int>& scores, const std::vector<double>& zScores, const std::string& subject) {
+    std::cout << subject << "result:\n";
+    std::cout << "AvarageScore: " << calculateMean(scores) << "\n";
+    std::cout << "Standard Deviation: " << calculateStandardDeviation(scores, calculateMean(scores)) << "\n";
+    std::cout << "TotalScore: " << std::accumulate(scores.begin(), scores.end(), 0) << "\n";
+
+    // 点数の高い順に並べ替え
+    std::vector<std::pair<int, double>> sortedScores;
+    for (int i = 0; i < scores.size(); ++i) {
+        sortedScores.push_back({scores[i], zScores[i]});
+    }
+
+    std::sort(sortedScores.begin(), sortedScores.end(), [](const auto& a, const auto& b) {
+        return a.second > b.second;
+    });
+
+    // 結果の表示
+    std::cout << "Sort Score:\n";
+    for (const auto& entry : sortedScores) {
+        std::cout << "Score: " << entry.first << ", Deviation value: " << entry.second << "\n";
+    }
+
+    std::cout << "-----------------------------\n";
+}