Yurkov_firstHW

homework/Yurkov/01/matr1.cpp

@@ -0,0 +1,43 @@
+#include <chrono>
+#include <iostream>
+//по столбцам
+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(){
+    const int n = 1000;
+    int mas[n][n];
+
+    for(int i=0;i<n;i++)
+        for(int j=0;j<n;j++)
+            mas[i][j]=6;
+
+    Timer t;
+    int sum=0;
+
+    for(int i=0;i<n;i++)
+        for(int j=0;j<n;j++)
+            sum+=mas[i][j]; 
+
+    return sum;
+}

homework/Yurkov/01/matr2.cpp

@@ -0,0 +1,43 @@
+#include <chrono>
+#include <iostream>
+//по строкам
+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(){
+    const int n = 1000;
+    int mas[n][n];
+
+    for(int i=0;i<n;i++)
+        for(int j=0;j<n;j++)
+            mas[i][j]=6;
+
+    Timer t;
+    int sum=0;
+
+    for(int i=0;i<n;i++)
+        for(int j=0;j<n;j++)
+            sum+=mas[j][i]; 
+
+    return sum;
+}