题解 | 最近公共祖先
最近公共祖先
https://www.nowcoder.com/practice/70e00e490b454006976c1fdf47f155d9
class LCA {
public:
int getLCA(int a, int b) {
// write code here
if(a>b) return getLCA(b, a);
if(a==b) return a;
if(b/2 > a) return getLCA(a, b/2);
if(b/2 < a) return getLCA(a/2, b/2);
return a;
}
};
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