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
  function Solution(round) {
    let limit = round;
    let offset = 0;
    let result = [];

    while (limit >= 1) {
      let line = [];
      for (let i = round - limit + 1; i <= round; i++) {
        line.push((((1 + i) * i) / 2) - offset);
      }
      result.push(line);
      limit--;
      offset++;
    }

    return result;
  }
  while ((line = await readline())) {
    let tokens = line.split(" ");
    let param = parseInt(tokens[0]);

    let s = Solution(param)
    for(const a of s){
      console.log(a.join(' '))
    }
  }
})();