写一个算法找到数组中两个元素相加等于指定数的所有组合

Answer 1

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var twoSum = function (nums, target) {
  let r1 = (r2 = 0);

  for (let o = 0; o < nums.length; o++) {
    for (let i = o + 1; i < nums.length; i++) {
      if (nums[o] + nums[i] === target) {
        r1 = o;
        r2 = i;
      }
    }
  }

  return [r1, r2];
}