哈希表 - 统计两个数组的公共元素

2657.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
let A = [1, 3, 2, 4];
let B = [3, 1, 2, 4];
let set = new Set();
let res = [];
for (let i = 0; i < B.length; i++) {
    set.add(A[i]);
    let num = 0;
    for (let j = 0; j <= i; j++) {
        if (set.has(B[j])) {
            num++;
        }
    }
    res.push(num);
    console.log(num);
}
console.log(res);

2657.ts

let A = [1, 3, 2, 4]
let B = [3, 1, 2, 4]

let set = new Set()
let res = []
for (let i = 0; i < B.length; i++) {
    set.add(A[i])
    let num = 0
    for (let j = 0; j <= i; j++) {
        if (set.has(B[j])) {
            num++
        }
    }
    res.push(num)
    console.log(num)
    
}
console.log(res)

源码地址

• JavaScript
• TypeScript