计算最大乘积

位运算解法

具体解析可以看：最大单词长度乘积（Java & JS & Py & C）-优快云博客

JS算法源码

/* JavaScript Node ACM模式 控制台输入获取 */
const readline = require("readline");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
});

rl.on("line", (line) => {
  console.log(getResult(line.split(",")));
});

function getResult(words) {
  let ans = 0;

  const n = words.length;

  const bits = new Array(n).fill(0);
  for (let i = 0; i < n; i++) {
    for (let j = 0; j < words[i].length; j++) {
      bits[i] |= 1 << (words[i][j].charCodeAt() - 97);
    }
  }