largest_pos_int_neg.py (1038B)
| # 2441. Largest Positive Integer That Exists With Its Negative
"""
given an integer array 'nums'that does not contain any zeros, find the
largest positive integer 'k' such that '-k' also exists in the array. return
the positive integer 'k'. if there is no such integer, return -1;
"""
class Solution(object):
def findMaxK(self, nums):
"""
:type nums: List[int]
:rtype: int
"""
nums.sort()
left, right = 0, len(nums) - 1
max_k = float("-inf")
while left < right:
if nums[left] + nums[right] == 0:
max_k = max(max_k, nums[right])
left += 1
right -= 1
elif nums[left] + nums[right] < 0:
left += 1
else:
right -= 1
return max_k if max_k != float("-inf") else -1
if __name__ == "__main__":
obj = Solution()
print(obj.findMaxK([-1, 2, -3, 3]))
print(obj.findMaxK([-1, 10, 6, 7, -7, 1]))
print(obj.findMaxK([-10, 8, 6, 7, -2, -3]))
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