Here’s one approach. It copies the defined array elements to a new array and saves their indexes. It sorts the new array and then puts the sorted results back into the indexes that were previously used. var a = []; a[0] = 3; a[1] = 2; a[2] = 6; a[7] = 4; a[8] = 5; … Read more
You could use: Bitmap bitmap = cache.get(key, null); But understand that this is the same as get(key): Bitmap bitmap = cache.get(key); The best way to use get(key, default) is to provide a generic default case, something to is a valid substitute when the key is not found. But there is no good reason not to … Read more
Sparsed arrays built with hashmaps are very inefficient for frequently read data. The most efficient implementations uses a Trie that allows access to a single vector where segments are distributed. A Trie can compute if an element is present in the table by performing only read-only TWO array indexing to get the effective position where … Read more