content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in 
   * compliance with the License. You may obtain a copy of the License at
   *
   * https://opensource.org/licenses/Apache-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License
   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing permissions and limitations under
   * the License.
   *
   */
  
  
  package com.tencent.angel.ml.math2.vector;
  
  import org.junit.Test;
  
  public class CloneTest {
  
    @Test public void cloneTest() {
      int n = 10000000;
      double[] clres;
      double[] cpres = new double[n];
      for (int i = 0; i < n; i++) {
        cpres[i] = Math.random();
      }
  
      long start, stop, t1 = 0L, t2 = 0L;
      for (int i = 0; i < 10; i++) {
        start = System.currentTimeMillis();
        clres = cpres.clone();
        stop = System.currentTimeMillis();
        t1 += stop - start;
  
        start = System.currentTimeMillis();
        System.arraycopy(clres, 0, cpres, 0, cpres.length);
        stop = System.currentTimeMillis();
        t2 += stop - start;
      }
  
      System.out.println(t1);
      System.out.println(t2);
    }
  }
  