Steward
分享是一種喜悅、更是一種幸福
程式語言 - LeetCode - C++ - 657. Robot Return to Origin
題目:

解答:
class Solution {
public:
bool judgeCircle(string moves) {
int x = 0;
int y = 0;
for (char ch : moves) {
if (ch == 'U') y -= 1;
else if (ch == 'D') y += 1;
else if (ch == 'L') x -= 1;
else if (ch == 'R') x += 1;
}
return x == 0 && y == 0;
}
};