Homework 01 by Irina Prokopenko

homework/01/ProkopenkoIrina/1.cpp

@@ -0,0 +1,49 @@
+#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_;
+};
+
+
+int main()
+{ int size=1000;
+    int s=0;
+    int arr[size][size];
+    for(int i=0;i<size;++i)
+    {
+        for(int j=0;j<size;++j)
+        {
+            arr[i][j]=1;
+        }
+    }
+    /*stroki*/
+    Timer t;
+    for(int i=0;i<size;++i) {
+        for (int j = 0; j < size; ++j) {
+            s += arr[i][j];
+        }
+    }
+
+    return s;
+}
+

homework/01/ProkopenkoIrina/2.cpp

@@ -0,0 +1,50 @@
+#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_;
+};
+
+
+int main()
+{ int size=1000;
+    int s=0;
+    int arr[size][size];
+    for(int i=0;i<size;++i)
+    {
+        for(int j=0;j<size;++j)
+        {
+            arr[i][j]=1;
+        }
+    }
+    /*stolbi*/
+    Timer t;
+    for(int i=0;i<size;++i)
+    {
+        for(int j=0;j<size;++j)
+        {
+            s+=arr[j][i];
+        }
+    }
+    return s;
+}
+