@ohos.util.ArrayList

@ohos.util.ArrayList.has

官方API文档

测试用例 1: 测试在最坏情况下（查找元素不存在的情况）ArrayList容器的has接口，ArrayList长度为500000

function test_has(loopCount: number) {
  let list = new ArrayList<number>();
  for (let i = 0; i < 500000; i++) {
    list.add(i);
  }
  const startTime = new Date();
  for (let i = 0; i < loopCount; i++) {
    list.has(500000);
  }
  const endTime = new Date();
  const executionTime = endTime.getTime() - startTime.getTime();
  const averageTime = executionTime / loopCount;
  console.log(`!${test_id}: ${averageTime} ms`);
}

测试用例 2: 测试在最优情况下（查找元素为第一个）ArrayList容器的has接口，ArrayList长度为500000

function test_has2(loopCount: number) {
  let list = new ArrayList<number>();
  for (let i = 0; i < 500000; i++) {
    list.add(i);
  }
  const startTime = new Date();
  for (let i = 0; i < loopCount; i++) {
    list.has(0);
  }
  const endTime = new Date();
  const executionTime = endTime.getTime() - startTime.getTime();
  const averageTime = executionTime / loopCount;
  console.log(`!${test_id}: ${averageTime} ms`);
}

测试结果

测试用例	测试平台	运行时间
测试用例 1	Huawei Phone	0.515000 ms
测试用例 2	Huawei Phone	0.000060 ms

@ohos.util.ArrayList.insert

官方API文档

测试用例 1: 测试ArrayList容器insert接口

function test_insert(loopCount: number) {
  let list = new ArrayList<number>();
  const startTime = new Date();
  for (let i = 0; i < loopCount; i++) {
    list.insert(0,i);
  }
  const endTime = new Date();
  const executionTime = endTime.getTime() - startTime.getTime();
  const averageTime = executionTime / loopCount;
  console.log(`!${test_id}: ${averageTime} ms`);
}

测试结果

测试用例	测试平台	运行时间
测试用例 1	Huawei Phone	0.000100 ms

@ohos.util.ArrayList.add

官方API文档

测试用例 1: 测试ArrayList容器add接口

function test_add(loopCount: number) {
  let list = new ArrayList<number>();
  const startTime = new Date();
  for (let i = 0; i < loopCount; i++) {
    list.add(1);
  }
  const endTime = new Date();
  const executionTime = endTime.getTime() - startTime.getTime();
  const averageTime = executionTime / loopCount;
  console.log(`!${test_id}: ${averageTime} ms`);
}

测试结果

测试用例	测试平台	运行时间
测试用例 1	Huawei Phone	0.000168 ms