diff --git a/histogram.cpp b/histogram.cpp
new file mode 100644
index 0000000..dd5f5ed
--- /dev/null
+++ b/histogram.cpp
@@ -0,0 +1,79 @@
+#include <iostream>
+#include "histogram.h"
+#include "histogram_internal.h"
+#include <algorithm>
+#include <cmath>
+
+
+void find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+    if (numbers.empty()) return;
+
+    min = numbers[0];
+    max = numbers[0];
+    for (double num : numbers) {
+        if (num < min) min = num;
+        if (num > max) max = num;
+    }
+}
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count) {
+    if (numbers.empty() || bin_count == 0) return {};
+
+    double min, max;
+    find_minmax(numbers, min, max);
+
+    std::vector<size_t> bins(bin_count);
+    double bin_size = (max - min) / bin_count;
+
+    for (double num : numbers) {
+        bool found = false;
+        for (size_t j = 0; j < bin_count - 1 && !found; ++j) {
+            double lo = min + j * bin_size;
+            double hi = min + (j + 1) * bin_size;
+            if (lo <= num && num < hi) {
+                bins[j]++;
+                found = true;
+            }
+        }
+        if (!found) {
+            bins[bin_count - 1]++;
+        }
+    }
+
+    return bins;
+}
+
+Input input_data() {
+    Input in;
+    std::cin >> in.number_count;
+
+    in.numbers.resize(in.number_count);
+    for (size_t i = 0; i < in.number_count; i++) {
+        std::cin >> in.numbers[i];
+    }
+
+    std::cin >> in.bin_count;
+    return in;
+}
+
+void show_histogram_text(const std::vector<size_t>& bins, size_t max_width) {
+    if (bins.empty()) return;
+
+    size_t max_count = *std::max_element(bins.begin(), bins.end());
+    if (max_count == 0) return;
+
+    for (size_t count : bins) {
+
+        if (count < 100) std::cout << " ";
+        if (count < 10) std::cout << " ";
+
+        std::cout << count << "|";
+
+
+        size_t bar_length = (count * max_width) / max_count;
+        for (size_t i = 0; i < bar_length; ++i) {
+            std::cout << "*";
+        }
+        std::cout << std::endl;
+    }
+}
diff --git a/histogram.h b/histogram.h
new file mode 100644
index 0000000..05847f1
--- /dev/null
+++ b/histogram.h
@@ -0,0 +1,17 @@
+#ifndef HISTOGRAM_H
+#define HISTOGRAM_H
+
+#include <vector>
+
+struct Input {
+    std::vector<double> numbers;
+    size_t bin_count{};
+    size_t number_count;
+};
+
+
+Input input_data();
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
+void show_histogram_text(const std::vector<size_t>& bins, size_t max_width = 80);
+
+#endif
diff --git a/histogram_internal.h b/histogram_internal.h
new file mode 100644
index 0000000..4ca4ae4
--- /dev/null
+++ b/histogram_internal.h
@@ -0,0 +1,8 @@
+#ifndef HISTOGRAM_INTERNAL_H
+#define HISTOGRAM_INTERNAL_H
+
+#include <vector>
+
+void find_minmax(const std::vector<double>& numbers, double& min, double& max);
+
+#endif