1 - 两数之和 about leetcode HOT 1 OPEN

const twoSum = (nums: number[], target: number) => {
  let result: number[] = [];
  let map: Map<number, number> = new Map();
  for (let i = 0; i < nums.length; i++) {
    let temp = target - nums[i];
    let index = map.get(temp);
    if (index !== undefined) {
      result.push(index, i);
      break;
    }
    map.set(nums[i], i);
  }
  return result;
};

console.log(twoSum([2, 11, 15, 7], 9));
console.log(twoSum([20, 55, 34, 69, 81, 92, 18], 38));
console.log(twoSum([3, 2, 4], 6));
console.log(twoSum([3, 3], 6));