题解 | #提取不重复的整数#
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
const readline = require('readline'); const rl = readline.createInterface({ input: process.stdin, output: process.stdout }); rl.on('line', function (line) { const chars = line.split('').reverse() const results = chars.reduce((prev, cur) => { if (!prev.map[cur]) { prev.string += cur prev.map[cur] = true } return prev }, {string: '', map: {}}) console.log(results.string) });