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为什么？？那不是小于等于么？？？In Reply To:这样可以了，只要把colorset[]换成你想要的 Posted by:sunmoonstar_love at 2005-07-28 22:20:29 > int GetRoot(int x){
> if(colorset[x] < 0) return x;
> else return GetRoot(colorset[x]);
> }
>
> void Union (int a, int b){
> int rootA = GetRoot(a);
> int rootB = GetRoot(b);
>
> if(rootA == rootB) return;
>
> if(colorset[rootA] <= colorset[rootB]){
>
> colorset[rootA] += colorset[rootB];
> colorset[rootB] = rootA;
> }
> } else {
>
> colorset[rootB] += colorset[rootA];
> colorset[rootA] = rootB;
> }
> }
> }
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