7 lessons · DSA pattern
Hashmaps
In Arrays the hashmap was a trick. Here it becomes the main tool. You already know: dict and set give O(1) average lookup ( Hashing ), as in Two Sum and Co…
Start learning →In Arrays the hashmap was a trick. Here it becomes the main tool. You already know: dict and set give O(1) average lookup ( Hashing ), as in Two Sum and Co…
Start learning →