소프트웨어에 대한 모든 것

Final Value of Variable After Performing Operations 문제) 솔루션1) class Solution: def finalValueAfterOperations(self, operations: List[str]) -> int: val = 0 for operation in operations: if '+' in operation: val += 1 else: val -= 1 return val 솔루션2) class Solution: def finalValueAfterOperations(self, operations: List[str]) -> int: return sum(1 if '+' in operation else -1 for operation in operations)

concatenation of Array 문제) 솔루션1) class Solution: def getConcatenation(self, nums: List[int]) -> List[int]: return nums + nums 솔루션2) class Solution: def getConcatenation(self, nums: List[int]) -> List[int]: return nums * 2