python leetcode 657. Judge Route Circle

xiaoxiao2021-02-28  36

Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the original place.

The move sequence is represented by a string. And each move is represent by a character. The valid robot moves are R (Right), L(Left), U (Up) and D (down). The output should be true or false representing whether the robot makes a circle.

判断字符串能否回到原点(R_L, U_D)。

Example 1:

Input: "UD" Output: true

Example 2:

Input: "LL" Output: false

class Solution:     def judgeCircle(self, moves):         """         :type moves: str         :rtype: bool         """         if moves.count('U') == moves.count('D') and moves.count('L') == moves.count('R'):             return True         else:             return False
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