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1sem/programming basics/z7/19.cpp

@@ -0,0 +1,31 @@
+// pb_z7_19.cpp
+// Горбацевич Андрей
+#include <iostream>
+using namespace std;
+
+const int al = 100;
+
+int min(int a, int b) {
+    return (a < b? a : b);
+}
+
+void print_array(int arr[], int len)
+{
+    for (int i = 0; i < min(al, len); i++) {
+        cout << arr[i] << " ";
+    }
+    cout << endl;
+}
+
+int main()
+{
+    int count;
+    cout << "count >>>";
+    cin >> count;
+    int a[al];
+    for (int i = 0; i < al; i++)
+    {
+        a[i] = rand() % 100 + 1;
+    }
+    print_array(a, count);
+}

1sem/programming basics/z7/20.cpp

@@ -0,0 +1,32 @@
+// pb_z7_20.cpp
+// Горбацевич Андрей
+#include <iostream>
+using namespace std;
+
+int count_equal(const int arr[], int len, int x)
+{
+    int count = 0;
+    for (int i=0; i<len; i++)
+    {
+        count += arr[i] == x;
+    }
+    return count;
+}
+
+int main()
+{
+
+    int n, x;
+    cout << "n >>>";
+    cin >>n;
+    int *a = new int[n];
+    for (int i = 0; i < n; i++)
+    {
+        cout << "a[" << i << "] >>>";
+        cin >> a[i];
+    }
+    cout << "x >>>";
+    cin >> x;
+    cout << "count of `" << x << "`: " << count_equal(a, n, x);
+    delete[] a;
+}

1sem/programming basics/z7/21.cpp

@@ -0,0 +1,45 @@
+// pb_z7_21.cpp
+// Горбацевич Андрей
+#include <iostream>
+
+using namespace std;
+
+int splice_array(const int arr1[], const int arr2[], int len, int arr_out[])
+{
+    int out = 0;
+    for (int i=0; i<len; i++)
+    {
+        arr_out[i*2] = arr1[i];
+        arr_out[i*2+1] = arr2[i];
+        out += 2;
+    }
+    return out;
+}
+
+int main()
+{
+
+    int n;
+    cout << "n >>>";
+    cin >> n;
+    int *a1 = new int[n];
+    for (int i = 0; i < n; i++)
+    {
+        cout << "a1[" << i << "] >>>";
+        cin >> a1[i];
+    }
+
+    int *a2 = new int[n];
+    for (int i = 0; i < n; i++)
+    {
+        cout << "a2[" << i << "] >>>";
+        cin >> a2[i];
+    }
+    int *a = new int[n * 2];
+    int l = splice_array(a1, a2, n, a);
+    cout << "length " << l << endl;
+    for (int i = 0; i < l; i++) {
+        cout << a[i] << " ";
+    }
+    delete[] a, a1, a2;
+}