面试题 57. 和为 s 的两个数字

输入：nums = [2,7,11,15], target = 9
输出：[2,7] 或者 [7,2]

输入：nums = [10,26,30,31,47,60], target = 40
输出：[10,30] 或者 [30,10]

class Solution:
    def twoSum(self, nums: List[int], target: int) -> List[int]:
        p, q = 0, len(nums) - 1
        while p < q:
            s = nums[p] + nums[q]
            if s == target:
                return [nums[p], nums[q]]
            if s < target:
                p += 1
            else:
                q -= 1

class Solution {
    public int[] twoSum(int[] nums, int target) {
        int p = 0, q = nums.length - 1;
        while (p < q) {
            int s = nums[p] + nums[q];
            if (s == target) {
                return new int[] {nums[p], nums[q]};
            }
            if (s < target) {
                ++p;
            } else {
                --q;
            }
        }
        return new int[]{0};
    }
}

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function (nums, target) {
  let left = 0;
  let right = nums.length - 1;
  while (left < right) {
    let sum = nums[left] + nums[right];
    if (sum === target) {
      return [nums[left], nums[right]];
    } else if (sum > target) {
      right--;
    } else {
      left++;
    }
  }
};