Smallest Range II

Intuition

Solution

class Solution:
    def smallestRangeII(self, A: List[int], K: int) -> int:
        A.sort()
        ans = A[-1] - A[0]
        for i in range(len(A) - 1):
            ans = min(
                ans,
                max(A[-1] - K, A[i] + K) - min(A[0] + K, A[i + 1] - K)
            )
        return ans