leetcode 2574. Left and Right Sum Differences

https://leetcode.com/problems/left-and-right-sum-differences/description/

 

class Solution:
    def leftRigthDifference(self, nums: List[int]) -> List[int]:
        nums.append(0)
        left_sum = 0
        right_sum = sum(nums) - nums[0]
 
        answer = []
 
        for i in range(len(nums)-1):
            answer.append(abs(left_sum-right_sum))
            left_sum+=nums[i]
            right_sum -= nums[i+1]
        return answer

Line3에 for loop에 right_sum 을 뺄때 인덱스에러를 막기 위해서 0을 넣음
O(N)으로 해결 가능하네요

To avoid index error , In line3 I appended 0 into 'nums'
We can handle this problem with O(N)