题解 | #蛇形矩阵#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void async function () {
    // Write your code here
    while(line = await readline()){
        // 蛇形矩阵,二维数组
        let arr = []
        let temp = 1
        for (let i = 0; i < line; i++) {
            arr[i] = []
            for (let j = 0; j <= i; j++) {
                arr[i-j][j] = temp++
            }
        }
        arr.forEach(item => console.log(item.join(' ')))
    }
}()