在python中检查一个数组中有两个相同值的两个数组

def has_duplicates(lst):
    return len(lst) != len(set(lst))

# 示例
array = [1, 2, 3, 4, 5, 5]
print(has_duplicates(array))  # 输出: True

def has_duplicates(lst):
    counts = {}
    for item in lst:
        if item in counts:
            return True
        counts[item] = 1
    return False

# 示例
array = [1, 2, 3, 4, 5, 5]
print(has_duplicates(array))  # 输出: True

def has_duplicates(lst):
    n = len(lst)
    for i in range(n):
        for j in range(i + 1, n):
            if lst[i] == lst[j]:
                return True
    return False

# 示例
array = [1, 2, 3, 4, 5, 5]
print(has_duplicates(array))  # 输出: True

def has_duplicates(lst):
    seen = set()
    for item in lst:
        if item in seen:
            return True
        seen.add(item)
    return False