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 ((n = await readline())) {
        let arr = [];
        let num = 1;
        // 将第一列的数求出来
        for (let i = 0; i <= n - 1; i++) {
            num += i;
            arr.push([num]);
        }
        // console.log(arr);
        for (let i = 0; i < arr.length; i++) {
            let res = arr[i][0];
            for (let j = i + 2; j <= n; j++) {
                arr[i].push(res + j);
                res += j;
            }
        }
        for(let i = 0; i < arr.length; i++){
            console.log(arr[i].join(' '));
        }
    }
})();