Robot Return to Origin
Robot在(0,0)点, 给UP DOWN LEFT RIGHT几个操作, 问最后是不是回到原点. 直接模拟一下就可以.
class Solution {
public boolean judgeCircle(String moves) {
int x = 0;
int y = 0;
for(char c : moves.toCharArray()) {
if(c == 'U')
y++;
else if(c == 'D')
y--;
else if(c == 'R')
x++;
else
x--;
}
return (x == 0 && y == 0);
}
}