statistik.cpp

#include <iostream>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <format>

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cout << "Irrashai, inputnya dipisah spasi ya ~ " << std::endl;
    std::cout << "Maksimum 255 bilangan bulat positif rentang 1 <= 255" << std::endl;
    std::cout << "Masukkan input : ";
    
    size_t total;
    std::array<int, 256> arr = {0};
    for (size_t i = 1; i <= 255; i++) {
        std::cin >> arr[i];
        char ch = std::cin.get();
        if (ch == EOF || ch == '\n') {
            total = i;
            break;
        }
    }

    std::sort(&arr[1], &arr[total]);

    std::array<int, 256> res = {0};

    for (size_t i = 1; i <= total; i++){
            res[arr[i]]++;
    }

    std::cout << "---------" << std::endl;
    for (size_t i = 1; i <= 255; i++) {
        if (res[i]) {
            std::cout << '|';
            if (res[i] <= 9) {
                std::cout << "  ";
            } else if (res[i] <= 99) {
                std::cout << " ";
            }
            std::cout << std::format("{}|", i};
            
            if (i <= 9) {
                std::cout << "  ";
            } else if (i <= 99) {
                std::cout << " ";
            }
            std::cout << std::format("{}|", res[i]) << std::endl;
        }
    }
    std::cout << "---------" << std::endl;
    
    std::cout << std::format("Total : {}", total) << std::endl;
    std::cout << std::format("Min : {}", arr[1]) << std::endl;
    std::cout << std::format("Max : {}", arr[total]) << std::endl;
    
    int range = arr[total] - arr[1];
    std::cout << "Range : " << range << std::endl;
    float kelas = 1.0 + 3.3 * log(total);
    std::cout << "Kelas : " << kelas << std::endl;
    float interval = range / kelas;
    std::cout << "Interval : " << interval << " (" << round(interval) << ')' << std::endl;
    
    std::cout << "------------" << std::endl;
    for (size_t i = arr[1]; i <= arr[total];) {
        std::cout << '|';
        if (res[i] <= 9) {
            std::cout << "  ";
        } else if (res[i] <= 99) {
            std::cout << " ";
        }
        std::cout << i << '-';
        i += interval;
        if (i <= 9) {
            std::cout << "  ";
        } else if (i <= 99) {
            std::cout << " ";
        }
        std::cout << i << '|' << std::endl;
        
        int tot = 0;
        for (int x = i - interval; x < i; i++) {
            tot += res[x];
        }
        
        if (tot <= 9) {
            std::cout << "  ";
        } else if (tot <= 99) {
            std::cout << " ";
        }
        std::cout << tot << '|' << std::endl;
    }
    std::cout << "------------" << std::endl;
    
    return 0;
}

Sucksss