整数列表中的对的元组

def find_pairs(nums, target):
    pairs = []
    for i in range(len(nums)):
        for j in range(i+1, len(nums)):
            if nums[i] + nums[j] == target:
                pairs.append((nums[i], nums[j]))
    return pairs

nums = [1, 2, 3, 4, 5]
target = 5
result = find_pairs(nums, target)
print(result)  # 输出：[(1, 4), (2, 3)]

def find_pairs(nums, target):
    pairs = []
    num_dict = {}
    for i, num in enumerate(nums):
        complement = target - num
        if complement in num_dict:
            pairs.append((complement, num))
        num_dict[num] = i
    return pairs

nums = [1, 2, 3, 4, 5]
target = 5
result = find_pairs(nums, target)
print(result)  # 输出：[(1, 4), (2, 3)]