Question

第一个函数找到一个数字的因子并且工作正常。

//first find divisors of a number

function divisors(n) {
    var result = [];
    for (var i = 1; i <= n; i++) {
      if ((n % i) == 0) {
        result.push(i);
      }
    }
    return result;
  }
  //the following gives problems

function commonTerms(arr1, arr2) {
  var arr1 = [];
  arr2 = [];
  common = [];
  var m = Math.min(arr1.length, arr2.length);
  for (var i = 0; i < arr1.length; i++) {
    for (var j = 0; j < arr2.length; j++) {
      if ((arr1(i)) == (arr2(j))) {
        common.push(arr1(i));
      } else {
        continue;
      }
    }
  }
  return common;
}

var x = parseInt(prompt("number to find divisors of?"));
document.write(divisors(x));
var y = parseInt(prompt("number to find divisors of?"));
document.write("<br>" + divisors(y));
alert(commonTerms(divisors(x), divisors(y)));

<!DOCTYPE html>
<html>

<head>
  <link href="css/styles.css" rel="stylesheet">
</head>

<body>

  <h1>GCD</h1>

  <p>This is my first website
    <br>finding div</p>
</body>

</html>

它不会返回任何东西，第二个功能是让我麻烦的那个。我一直在看它一个小时。开始自己学习编程。谢谢您的帮助。

Answer 1

问题是您正在访问这样的数组项：verticalViewPager.setPageTransformer(false, new ViewPager.PageTransformer() { @Override public void transformPage(View view, float position) { int pageWidth = view.getWidth(); int pageHeight = view.getHeight(); if (position >= 0) { view.setTranslationY(position < 0 ? 0f : -pageHeight * position); } } });。你应该用方括号来做：

arr(i)

你根本不需要圆括号。另外，您最好use strict comparison（if ((arr1[i])==(arr2[j])){ common.push(arr1[i]); //... }代替===）。

所以它会是：

==

BTW考虑检查this question

Answer 2

首先，if ((arr1[i])==(arr2[j]))代替if ((arr1(i))==(arr2(j)))

其次，删除var arr1=[]; arr2 =[];作为接收参数，然后离开var common=[]

我也会在循环中使用m，因为我猜这是你的意图

Answer 3

正如我已经评论过的那样，您正在重置参数，因此无法正常工作。请检查以下代码。

＆＃13;

//first find divisors of a number

function divisors(n) {
    var result = [];
    for (var i = 1; i <= n; i++) {
      if ((n % i) == 0) {
        result.push(i);
      }
    }
    return result;
  }
  //the following gives problems

function commonTerms(arr1, arr2) {
  common = [];
  var m = Math.min(arr1.length, arr2.length);
  for (var i = 0; i < arr1.length; i++) {
    for (var j = 0; j < arr2.length; j++) {
      if ((arr1(i)) == (arr2(j))) {
        common.push(arr1(i));
      } else {
        continue;
      }
    }
  }
  return common;
}

var x = parseInt(prompt("number to find divisors of?"));
document.write(divisors(x));
var y = parseInt(prompt("number to find divisors of?"));
document.write("<br>" + divisors(y));
alert(commonTerms(divisors(x), divisors(y)));

＆＃13;

<!DOCTYPE html>
<html>

<head>
  <link href="css/styles.css" rel="stylesheet">
</head>

<body>

  <h1>GCD</h1>

  <p>This is my first website
    <br>finding div</p>
</body>

</html>

＆＃13;

找到数组的交集来查找hcf

3 个答案: