leetcode之 Judge Route Circle

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题目很简单:本质上就是判断上下左右的次数是否相等


class Solution {

public:
    bool judgeCircle(string moves) {
        int up_count =0;
        int dow_count =0;
        int r_count=0;
        int l_count=0;
        for(string::iterator iter=moves.begin();iter!=moves.end();iter++)
        {
            if((*iter)=='R')
                r_count++;
            else if((*iter)=='L')
                l_count++;
            else if ((*iter)=='U')
                up_count++;
            else if((*iter)=='D')
                dow_count++;
        }
        if(l_count == r_count && up_count == dow_count)
            return true;
        
        return false;
    }
};
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