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.
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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); } } |