commit f1d889513a5490ff8f8df03bbfbf1189e3117fa4
Author: wei <1219738919@qq.com>
Date:   Thu Aug 6 16:59:43 2020 +0800

    first aa

diff --git a/Sort.java b/Sort.java
new file mode 100644
index 0000000..a0bd4ff
--- /dev/null
+++ b/Sort.java
@@ -0,0 +1,59 @@
+
+package sort;
+
+
+
+
+
+public class Sort {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        int N=100000;
+        int start=0;
+        int end=1000000;
+        
+        RandomNum rn=new RandomNum();
+        int[] A=new int[N];
+     //   A=rn.RandomGen(N,start,end);
+        for(int k=0;k<N;k++){
+            A[k]=k;
+        }
+            
+        int[] B=A.clone();
+        int[] C=A.clone();
+        int[] D=A.clone();
+        
+        
+        SelectionSort s=new SelectionSort();
+        MergeSort m=new MergeSort();
+    //    InsertionSort i=new InsertionSort();
+    //    QuickSort q=new QuickSort();
+        
+        Stopwatch clock1=new Stopwatch();
+        m.sort(A);
+        double time1=clock1.elapsedTime();
+        
+        Stopwatch clock2=new Stopwatch();
+        s.sort(B);
+        double time2=clock2.elapsedTime();
+        
+     //   Stopwatch clock3=new Stopwatch();
+    //    i.sort(C);
+    //    double time3=clock3.elapsedTime();
+        
+     //   Stopwatch clock4=new Stopwatch();
+     //   q.sort(D);
+     //   double time4=clock4.elapsedTime();
+        
+        System.out.println("Selection sort:"+time2+"s");
+     //   System.out.println("Insertion sort:"+time3+"s");
+        System.out.println("Merge sort:"+time1+"s");
+     //   System.out.println("Quick sort:"+time4+"s");
+        
+        
+    }
+    
+}