Check if array contains contiguous integers with duplicates allowed in Python


Suppose we have an array of numbers called nums, it may have duplicate elements. We have to check whether it is a set of contiguous numbers or not.

So, if the input is like nums = [6, 8, 8, 3, 3, 3, 5, 4, 4, 7], then the output will be true as the elements are 3, 4, 5, 6, 7, 8.

To solve this, we will follow these steps −

  • sort the list nums
  • for i in range 1 to size of nums - 1, do
    • if nums[i] - nums[i-1] > 1, then
      • return False
  • return True

Let us see the following implementation to get better understanding −

Example

 Live Demo

def solve(nums):
   nums.sort()
   for i in range(1,len(nums)):
      if nums[i] - nums[i-1] > 1:
         return False
   return True
nums = [6, 8, 8, 3, 3, 3, 5, 4, 4, 7] 
print(solve(nums))

Input

[6, 8, 8, 3, 3, 3, 5, 4, 4, 7]

Output

True

Updated on: 30-Dec-2020

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