用C++创建直方图

#include <iostream>
#include <vector>

// 创建直方图
std::vector<int> createHistogram(const std::vector<int>& data, int numBins) {
    // 计算每个区间的宽度
    int minVal = *min_element(data.begin(), data.end());
    int maxVal = *max_element(data.begin(), data.end());
    int binWidth = (maxVal - minVal) / numBins;

    // 初始化直方图
    std::vector<int> histogram(numBins, 0);

    // 统计数据
    for (int value : data) {
        int binIndex = (value - minVal) / binWidth;
        histogram[binIndex]++;
    }

    return histogram;
}

int main() {
    // 示例数据
    std::vector<int> data = {1, 3, 5, 7, 9, 2, 4, 6, 8, 10};

    // 创建直方图
    std::vector<int> histogram = createHistogram(data, 5);

    // 打印直方图
    for (int i = 0; i < histogram.size(); i++) {
        std::cout << "Bin " << i << ": " << histogram[i] << std::endl;
    }

    return 0;
}