The problem is that an upper case letter won't produce the same hash as the same letter in lower case. Hash table OOP implementation in C - Stack Exchange Last Updated : 11 May, 2022. Zie dat het elke keer met 33 wordt vermenigvuldigd, waarbij c eraan wordt toegevoegd. Since you don't convert the word being checked to lower case before hashing it, you get the wrong hash number and search the wrong part of the . This algorithm is very simple yet powerful enough to generate some good hash. String Hashing in C++ | random thoughts A good hash function requires avalanching from all input bits to all the output bits. CANDIDATE: A tool for generating anonymous participant-linking IDs in ... FNV-1a has outstanding distribution and collisions are rare. $ cat sample1.txt Cryptography is both the practice and study of the techniques used to communicate and/or store information or data privately and securely, without being intercepted by third . // https://stackoverflow.com/questions/10696223/reason-for-5381-number-in-djb-hash . This resulted in the following code: unsigned int hash (const char *str) { unsigned int hash = 5381; int c; while (c = *str++) hash = ( (hash << 5) + hash) + c; /* hash * 33 + c */ return hash; } At this point, the compiler told me that I had to put parenthesis . insertWord computes the hash, and calls searchWord which also computes the hash. NeuralHash is a perceptual hash function that uses a neural network. Main Menu; by School; by Literature Title; by Subject; by Study Guides; Textbook Solutions Expert Tutors Earn. Hash. Example: djb2 algorithm for C // Djb2 hash function - really good and implementable code unsigned long hash(char *str) { unsigned long hash = 5381; int c; while ((c I recommend to have a search helper with signature. djb2 hash function.c This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. If the hash function is fairly good, and the number of buckets is prime, then anywhere up to one item per one bucket will result in a median search depth of one and an average search depth just over one. pset5 speller hash-table hash-function pset5-hashfunction.