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Fix trie merging bug #67

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Fix trie merging bug #67

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6 changes: 3 additions & 3 deletions dedup.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9,12 +9,12 @@ struct Trie {
} *root=NULL;

char merge(struct Trie *p) {
// missing child
if(!p) return 0;
// this node is marked
if(p->flag) return 1;
// missing either child
if(!p->child[0]||!p->child[1]) return 0;
// true when both true;
return (p->flag = merge(p->child[0]) && merge(p->child[1]));
return (p->flag = merge(p->child[0]) & merge(p->child[1]));
}

void print(struct Trie *p, unsigned depth) {
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