hashset usage
- HashSet can have null, order is not guaranteed
- HashSet is commonly used if you want to access elements randomly or store a list of items which cannot contain duplicate valueshashset usage
- HashSet can have null, order is not guaranteed
- HashSet is commonly used if you want to access elements randomly or store a list of items which cannot contain duplicate valueshashset
/*
* Template for using hash set to find duplicates.
*/
boolean findDuplicates(List<Type> keys) {
// Replace Type with actual type of your key
Set<Type> hashset = new HashSet<>();
for (Type key : keys) {
if (hashset.contains(key)) {
return true;
}
hashset.add(key);
}
return false;
}Copyright © 2021 Codeinu
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