diff --git a/lab01/histogram.cpp b/lab01/histogram.cpp
new file mode 100644
index 0000000..df30c69
--- /dev/null
+++ b/lab01/histogram.cpp
@@ -0,0 +1,35 @@
+#include "histogram.h"
+static void
+find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers)
+    {
+        if (x < min) min = x;
+        else if (x > max) max = x;
+    }
+}
+
+std::vector <size_t>
+make_histogram(const std::vector<double>& numbers, size_t bucket, size_t number_count) {
+    std::vector <size_t> stolb(bucket);
+    double min, max;
+    find_minmax(numbers, min, max);
+    float k = (max - min) / bucket;
+    for (size_t i = 0; i < bucket; i++) stolb[i] = 0;
+    for (size_t i = 0; i < number_count; i++)
+    {
+        bool flag = false;
+        for (size_t j = 0; (j < bucket && !flag); j++)
+        {
+            if (numbers[i] >= (min + k * j) && numbers[i] < (min + k * (1 + j)))
+            {
+                stolb[j]++;
+                flag = true;
+
+            }
+        }
+        if (!flag) stolb[bucket - 1]++;
+    }
+    return stolb;
+}
diff --git a/lab01/histogram.h b/lab01/histogram.h
new file mode 100644
index 0000000..b85da0d
--- /dev/null
+++ b/lab01/histogram.h
@@ -0,0 +1,9 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+
+#endif // HISTOGRAM_H_INCLUDED
+#include <vector>
+
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t bin_count);
+#pragma once
diff --git a/lab01/lab01.cpp b/lab01/lab01.cpp
index 42fff6b..bbb7b7f 100644
--- a/lab01/lab01.cpp
+++ b/lab01/lab01.cpp
@@ -1,6 +1,6 @@
 #include <iostream>
 #include <vector>
-
+#include "histogram.h"
 
 using namespace std;
 
diff --git a/lab01/text.cpp b/lab01/text.cpp
new file mode 100644
index 0000000..fc64646
--- /dev/null
+++ b/lab01/text.cpp
@@ -0,0 +1,26 @@
+void
+show_histogram_text(std::vector <size_t> stolb, size_t bucket) {
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+    int maxlen = 0;
+
+    for (int j = 0; j < bucket; j++)
+    {
+        if (maxlen<stolb[j]) maxlen = stolb[j];
+    }
+
+    for (int j = 0; j < bucket; j++)
+    {
+        if (stolb[j] < 100) std::cout << " ";
+        if (stolb[j] < 10) std::cout << " ";
+        std::cout << stolb[j] << "|";
+        size_t height = stolb[j];
+        if (maxlen > MAX_ASTERISK)
+        {
+            if (maxlen != stolb[j]) height = MAX_ASTERISK * (static_cast <float> (stolb[j])/maxlen);
+            else if (maxlen == stolb[j]) height = MAX_ASTERISK;
+        }
+        for (int i = 0; i < height; i++) std::cout << "*";
+        std::cout << "\n";
+    }
+}
diff --git a/lab01/text.h b/lab01/text.h
new file mode 100644
index 0000000..e8faf75
--- /dev/null
+++ b/lab01/text.h
@@ -0,0 +1,10 @@
+#ifndef TEXT_H_INCLUDED
+#define TEXT_H_INCLUDED
+
+#include <vector>
+#include "text.cpp"
+
+void
+show_histogram_text(std::vector <size_t> stolb, size_t bucket);
+
+#endif // TEXT_H_INCLUDED