Reactjs 中两个数字之间的百分比

Question

我需要通过比较它们的相似度值来找出两个数组之间的百分比。例如，我有两个数组。

const arrOne = ["one", "two", "three", "four", "five"];

const arrTwo = ["one", "three", "four"];

let percentage = 100 * Math.abs(

            (arrOne.length - arrTwo.length) /

              ((arrOne.length + arrTwo.length) / 2)

          )

我需要比较这两个数组，并需要根据相似的字符串找到它的百分比。上面的方法是，我尝试过，但没有得到预期的输出

Answer 1

这是两个数组之间的重叠率：function intersectionRatio(arrOne, arrTwo){    intersection = arrOne.filter(el => arrTwo.includes(el))    elementsCount = arrOne.length + arrTwo.length - intersection.length    return intersection.length / elementsCount}intersectionRatio([1,2,3], [4,5,6]); // 0intersectionRatio([1,2,3], [1,2,3]); // 1intersectionRatio([1,2,3], [2,3,4]); // 0.5

Answer 2

试试这个：const arrTwoInArrOneRatio = arrTwo.filter(i=>arrOne.includes(i)).length / arrOne.lengthconst arrOneInArrTwoRatio = arrOne.filter(i=>arrTwo.includes(i)).length / arrTwo.length