力扣第一题

太简单就直接上代码参考吧

function fn(arr: number[], target: number) {
  const len = arr.length;
  
  for (let i = 0; i < len; i++) {
    for (let j = (i + 1); j < (len - i); j++) {
      if (arr[i] + arr[j] == target) return [i, j];
    }
  }
};

console.log(fn([1, 2, 3, 5, 8, 13, 21, 34, 55], 56));