dbs ho ja
bruteCoder
java
a year ago
503 B
8
Indexable
HashSet<Integer> set = new HashSet<>(); Arraylist<Integer> list = new Arraylist<>(); for(int i = 0 ;i<Q;i++){ int q = queries[i][0]; int val = queries[i][1]; if(q== 0) set.add(val); else { if(set.contains(val)){ //System.out.println(val); list.add(val); set.remove(val); }else list.add(0); } } int[] out = new int[list.size()]; int i = 0 ; for(int el : list) out[i++] = el; return out;
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