Given an array of integers, find if the array contains any duplicates.<\/p>\n
Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct.<\/p>\n
Example 1:<\/strong><\/p>\n Example 2:<\/strong><\/p>\n Example 3:<\/strong><\/p>\n Python<\/strong><\/p>\nInput:<\/strong> [1,2,3,1]\r\nOutput:<\/strong> true<\/pre>\n
Input: <\/strong>[1,2,3,4]\r\nOutput:<\/strong> false<\/pre>\n
Input: <\/strong>[1,1,1,3,3,4,3,2,4,2]\r\nOutput:<\/strong> true<\/pre>\n
\r\nclass Solution(object):\r\n def containsDuplicate(self, nums):\r\n """\r\n :type nums: List[int]\r\n :rtype: bool\r\n """\r\n if nums:\r\n list_len = len(nums)\r\n set_len = len(set(nums))\r\n if list_len == set_len:\r\n return False\r\n else:\r\n return True\r\n else:\r\n return False\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"