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python
- 机器人能否返回原点
124 ms
class Solution(object):
def judgeCircle(self, moves):
"""
:type moves: str
:rtype: bool
"""
x = 0
y = 0
for i in moves:
if i == "U":
y +=1
elif i == "D":
y +=-1
elif i == "L":
x +=-1
elif i == "R":
x +=1
if x ==0 and y == 0:
return True
else:
return False
python
32 ms
class Solution(object):
def judgeCircle(self, moves):
"""
:type moves: str
:rtype: bool
"""
l = moves.count('L')
r = moves.count('R')
u = moves.count('U')
d = moves.count('D')
if l==r and u==d:
return True
else:
return False