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main.cpp

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+#include <iostream>
+#include <vector>
+
+using namespace std;
+int main()
+{
+    size_t number_count;
+    cerr <<"enter number count: ";
+    cin >> number_count;
+
+    vector<double> numbers(number_count);
+    for( int i=0; i<number_count; i++){
+        cerr<<"enter number "<< i+1<<": ";
+        cin>>numbers[i];
+    }
+    size_t bin_count;
+    cerr <<"enter bin count : ";
+    cin >> bin_count;
+    vector<size_t> bins(bin_count);
+    double min=numbers[0];
+    double max=numbers[0];
+    for(double x : numbers){
+        if(x<min){
+            min=x;
+        }
+        if(x>max){
+            max=x;
+        }
+    }
+    double bin_size=(max-min)/bin_count;
+    for(size_t i=0; i<number_count; i++){
+        bool found = false;
+        for(size_t j=0;(j<bin_count-1)&& !found; j++){
+            auto lo=min+j*bin_size;
+            auto hi=min+(j+1)*bin_size;
+            if((lo<=numbers[i])&&(numbers[i]<hi)){
+                bins[j]++;
+                found=true;
+            }
+        }if(!found){
+            bins[bin_count-1]++;
+        }
+    }
+    for (size_t i = 0; i < number_count; i++)
+    {
+        for (size_t j = 0; j < bin_count; j++)
+        {
+            if (bins[j]> i)
+            {
+                cout << "*";
+            }
+            else
+            {
+                cout << " ";
+            }
+        }
+        cout << endl;
+    }
+    return 0;
+}