What do I use for a max-heap implementation in Python?
Python includes the heapq module for min-heaps, but I need a max heap. What should I use for a max-heap implementation in Python?
Python includes the heapq module for min-heaps, but I need a max heap. What should I use for a max-heap implementation in Python?
Wikipedia’s article on hash tables gives a distinctly better explanation and overview of different hash table schemes that people have used than I’m able to off the top of my head. In fact you’re probably better off reading that article than asking the question here. 🙂 That said… A chained hash table indexes into an … Read more
You are creating a 1×5 struct array. To quote the struct documentation: If value is a cell array, then s is a structure array with the same dimensions as value. Each element of s contains the corresponding element of value. Since the second argument in the expression struct( ‘Ps’, cell( 1, length(Ps) ) ) is … Read more
Try this:
It turned out, I misunderstood Logn to be lesser than 1. As I asked few of my seniors i got to know this today itself, that if the value of n is large, (which it usually is, when we are considering Big O ie worst case), logn can be greater than 1. So yeah, O(1) … Read more
A HashMap contains more than one key. You can use keySet() to get the set of all keys. will store 1 with key “foo” and 2 with key “bar”. To iterate over all the keys: will print “foo” and “bar”.
Hash tables are O(1) average and amortized case complexity, however it suffers from O(n) worst case time complexity. [And I think this is where your confusion is] Hash tables suffer from O(n) worst time complexity due to two reasons: If too many elements were hashed into the same key: looking inside this key may take O(n) time. Once a hash table has passed its load balance – it has … Read more
This may help: To put it simple, ADT is a logical description and data structure is concrete. ADT is the logical picture of the data and the operations to manipulate the component elements of the data. Data structure is the actual representation of the data during the implementation and the algorithms to manipulate the data … Read more
You only make sure that runner->next is not null, however after assignment runner = runner->next->next; runner can become null.
Try this: