LeetCode-657. Judge Route Circle
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题目链接:657. Judge Route Circle
题目大意:有一个机器人,可以上下左右走,现在给你一个字符串,包含U,D,L,R四种字符,请判断机器人走完之后,是否回到原来的位置上了。
常规解法:
class Solution(object): def judgeCircle(self, moves): x=0 y=0 mList = list(moves) for m in mList: if (m == 'U'): y += 1 elif (m == 'D'): y -= 1 elif (m == 'R'): x += 1 elif (m == 'L'): x -= 1 if (x == 0 and y == 0): return True else: return False
利用内建函数的解法(一行):
class Solution(object): def judgeCircle(self, moves): return moves.count('L') == moves.count('R') and moves.count('U') == moves.count('D')
因为这个题目实在是没有可说的,就这样吧。
以上。
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