homework_01

homework/Korekov/01/Timer.h

@@ -0,0 +1,25 @@
+#include <chrono>
+#include <iostream>
+
+class Timer
+{
+    using clock_t = std::chrono::high_resolution_clock;
+    using microseconds = std::chrono::microseconds;
+public:
+    Timer()
+        : start_(clock_t::now())
+    {
+    }
+
+    ~Timer()
+    {
+        const auto finish = clock_t::now();
+        const auto us = 
+            std::chrono::duration_cast<microseconds>
+                (finish - start_).count();
+        std::cout << us << " us" << std::endl;
+    }
+
+private:
+    const clock_t::time_point start_;
+};

homework/Korekov/01/sum_by_columns.cpp

@@ -0,0 +1,48 @@
+#include "Timer.h"
+
+#include <iostream>
+
+#define SIZE 506
+
+
+int my_function()
+
+{
+
+	volatile int arr[SIZE][SIZE];
+
+	volatile int sum = 0;
+	for (int i = 0; i < SIZE; i++)
+
+		for (int j = 0; j < SIZE; j++)
+
+			arr[i][j] = 1;
+
+	Timer t;
+
+	for (int i = 0; i < SIZE; i++)
+
+		for (int j = 0; j < SIZE; j++)
+
+			sum += arr[i][j];
+
+	return sum;
+
+}
+
+
+int main()
+
+{
+
+	std::cout << my_function() << std:: endl;
+
+	int n;
+
+	std::cin >> n;
+
+	return 0;
+
+}
+
+

homework/Korekov/01/sum_by_rows.cpp

@@ -0,0 +1,48 @@
+#include "Timer.h"
+
+#include <iostream>
+
+#define SIZE 506
+
+
+int my_function()
+
+{
+
+	volatile int arr[SIZE][SIZE];
+	volatile int sum = 0;
+
+	for (int i = 0; i < SIZE; i++)
+
+		for (int j = 0; j < SIZE; j++)
+
+			arr[i][j] = 1;
+
+	Timer t;
+
+	for (int i = 0; i < SIZE; i++)
+
+		for (int j = 0; j < SIZE; j++)
+
+			sum += arr[j][i];
+
+	return sum;
+
+}
+
+
+int main()
+
+{
+
+	std::cout << my_function() << std:: endl;
+
+	int n;
+
+	std::cin >> n;
+
+	return 0;
+
+}
+
+