Question

我试图得到函数battle2运行多长时间的平均值。这是我的一个小小的个人项目的一部分，用于测试编写代码的不同方式如何影响时间效率（我是初学者）。这似乎适用于n＆lt; = 3但完全崩溃的任何高于那个（理想情况下我有n = 100）并且我无法弄清楚为什么除了可能那个battle2已经包含一个for循环并且放一个on它的顶部放慢了太多？感谢您的任何见解！

第二个问题：特别是这个代码没有发生，但有时当我在较小的代码片段上使用performance.now（）时，它会记录为0毫秒...？这是因为它发生得如此之快，电脑无法记录时间或其他东西？

//Second version of my rock, paper, scissors function
function battle2(p1, p2){
  var shoot = ["rock", "scissors", "paper"];
  for (i = 0; i < 3; i++){
    if (p1 === shoot[i] && p2 === shoot[(i + 2) % 3]){
      return "p2";
    }
    else if (p1 === shoot[i] && p2 === shoot[(i + 1) % 3]){
      return "p1";
    }
    if (p1 === p2 ){
      return "p0";
    }
  }
}

//Create empty array and sum variables to collect values each pass of the 
  loop
n = 4    
var array2 = [];
var sum2 = 0;

//Repeat the code below this line n times
for (i = 0; i < n; i++){

  //Randomly generate p1 and p2 choice each time through the loop
  var choicesB = ["rock", "scissors", "paper"];
  var randomB = Math.floor(Math.random()*3);
  var random2B = Math.floor(Math.random()*3);
  p1 = choicesB[randomB];
  p2 = choicesB[random2B];

  //Check performance on battle2 each time through the loop
  var start2B = performance.now();
  battle2(p1,p2);
  var duration2B = performance.now() - start2B;

  //Sometimes performance.now() logs as 0 (why?), so I ignore those instances 
    here
  if (duration2B !== 0){
    array2.push(duration2B);
    sum2 += duration2B;
  }
}
var average2 = sum2/array2.length;
console.log(average2)

为n>运行此命令时的无限循环警告3？

0 个答案: