From 3b74373fc342d6c461df3f208fe4115fac3c16cd Mon Sep 17 00:00:00 2001
From: "Varvara (ZeninaVA)" <ZeninaVA@mpei.ru>
Date: Sat, 3 May 2025 13:40:28 +0300
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---
 main.cpp | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 153 insertions(+), 3 deletions(-)

diff --git a/main.cpp b/main.cpp
index b4392ec..8762af1 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,9 +1,159 @@
 #include <iostream>
+#include <vector>
 
 using namespace std;
 
-int main()
-{
-    cout << "Hello world!" << endl;
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+};
+
+Input
+input_data() {
+    size_t number_count, bin_count;
+    double minl, maxl, bin_size;
+
+
+    cerr << "Enter the number of elements: ";
+    cin >> number_count;
+
+    Input in;
+    in.numbers.resize(number_count);
+
+    vector<double> numbers(number_count);
+
+    cerr << "\nEnter " << number_count << " elements:" << endl;
+    for (size_t i = 0; i < number_count; i++) {
+        cin >> in.numbers[i];
+    }
+
+
+    cerr << "Enter the number of bins: ";
+    cin >> in.bin_count;
+
+    return in;
+}
+
+void
+find_minmax(const vector<double>& numbers, double& minl, double& maxl) {
+    minl = numbers[0];
+    maxl = numbers[0];
+
+    for (double x : numbers) {
+        if (x < minl) {
+            minl = x;
+        } else {
+            if (x > maxl) {
+                maxl = x;
+            }
+        }
+    }
+}
+
+vector<size_t>
+make_histogram(const vector<double>& numbers, size_t& bin_count) {
+    double minn, maxn;
+    find_minmax(numbers, minn, maxn);
+
+    double bin_size = (maxn - minn) / bin_count;
+
+    vector<size_t> bins(bin_count, 0);
+
+    for (size_t i = 0; i < numbers.size(); i++) {
+        bool found = false;
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
+            auto lo = minn + j * bin_size;
+            auto hi = minn + (j + 1) * bin_size;
+            if ((numbers[i] >= lo) && (numbers[i] <= hi)) {
+                bins[j]++;
+                found = true;
+            }
+        }
+        if (!found) {
+            bins[bin_count - 1]++;
+        }
+    }
+    return bins;
+}
+
+void
+show_histogram_text(const vector<size_t> bins, size_t bin_count) {
+    size_t max_count = bins[0];
+    for (size_t i = 1; i < bin_count; i++) {
+        if (bins[i] > max_count) {
+            max_count = bins[i];
+        }
+    }
+
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+
+    short space_count;
+
+    cerr << "\nHistogram:" << endl;
+
+    if (max_count <= MAX_ASTERISK) {
+        for (size_t i = 0; i < bin_count; i++) {
+            if (bins[i] < 10) {
+                space_count = 2;
+            } else if (bins[i] >= 10 && bins[i] < 100) {
+                space_count = 1;
+            } else if (bins[i] >= 100 && bins[i] < 1000) {
+                space_count = 0;
+            }
+
+
+
+            for (size_t k = 0; k < space_count; k++) {
+                cout << " ";
+            }
+
+            cout << bins[i];
+
+            cout << "|";
+
+
+            for (size_t j = 0; j < bins[i]; j++) {
+                cout << "*";
+            }
+
+            cout << "\n";
+        }
+    } else {
+        for (size_t i = 0; i < bin_count; i++) {
+            if (bins[i] < 10) {
+                space_count = 2;
+            } else if (bins[i] >= 10 && bins[i] < 100) {
+                space_count = 1;
+            } else if (bins[i] >= 100 && bins[i] < 1000) {
+                space_count = 0;
+            }
+
+
+            for (size_t k = 0; k < space_count; k++) {
+                cout << " ";
+            }
+
+            cout << bins[i];
+
+            cout << "|";
+
+            size_t height = static_cast<size_t>(MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count));
+            for (size_t j = 0; j < height; j++) {
+                cout << "*";
+            }
+
+            cout << "\n";
+        }
+    }
+}
+
+int main() {
+
+    auto in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_text(bins, in.bin_count);
+
     return 0;
 }