如何找到3个Sum最接近给定数字的数字

def findClosestSum(nums, target):
    nums.sort()  # 对给定的数字列表进行排序
    closestSum = float('inf')  # 初始化最接近的和为正无穷大
    for i in range(len(nums) - 2):
        left = i + 1
        right = len(nums) - 1
        while left < right:
            currentSum = nums[i] + nums[left] + nums[right]
            if abs(currentSum - target) < abs(closestSum - target):
                closestSum = currentSum
            if currentSum < target:
                left += 1
            else:
                right -= 1
    return closestSum

# 示例调用
nums = [1, 2, -3, 4, 5]
target = 1
closestSum = findClosestSum(nums, target)
print("最接近的和为:", closestSum)