Help with hashing

[gainzbro]

Having trouble generating a hash function for my code below.

How would I use the numbers on a telephone? For example, each letter
has a number associated with it.

Trying to generate 512 random 3 letter initials and take statistics on
a linked list array size 512 to hold this information.

Also, how would I go about reporting how many have no elements, 1 element,
2 elements, etc...? How can I figure out the maximum number of collisions? Should both results agree with the hashing statistics distribution?

#include <bits/stdc++.h> 
using namespace std; 
  
void printInitials(const string& name) 
{ 
    if (name.length() == 0) 
        return; 
  
    // Since touuper() returns int, we do typecasting 
    cout << (char)toupper(name[0]); 
  
    // Traverse rest of the string and print the 
    // characters after spaces. 
    for (int i = 1; i < name.length() - 1; i++) 
        if (name[i] == ' ') 
            cout << " " << (char)toupper(name[i + 1]); 
} 
  
// Driver code 
int main() 
{ 
    string name = "prabhat kumar singh"; 
    printInitials(name); 
    return 0; 
} 

[jonnin]

How would I use the numbers on a telephone? For example, each letter
has a number associated with it.

need more words on what that means.



Trying to generate 512 random 3 letter initials
the phone does not use all the letters. Do you want 3 letters from what a phone has, or something else?
either way, load a string with the letters you can use and randomly pick one 3 times per go. Use the length of the string to set up the random function. Look at <random> example code in any <random> documentation online to see how to do that.


Start there. See if you can generate the data, then we can look at the 2nd half.