// Get the ranked preferences for each voter Voter voters[num_voters]; for (int i = 0; i < num_voters; i++) printf("\nEnter the ranked preferences for voter %d:\n", i+1); for (int j = 0; j < num_candidates; j++) printf("Enter preference %d: ", j+1); scanf("%s", voters[i].preferences[j]);
This function builds the directed graph by setting locked[i][j] to true . You must check for cycles before locking any pair.
If you want to debug your cycle checker or optimize your sorting algorithm, I can help you refine your code. Let me know: Which is failing your tests? What error messages are you seeing in check50 ? Which sorting algorithm you chose to implement? Share public link
printf("The winner is: %d\n", winner);
The complete Tideman solution successfully simulates an election where the strongest preferences are honored without creating logical loops. The result is a system that identifies the most broadly preferred candidate by prioritizing majorities and maintaining a stable, acyclic hierarchy of winners. needed for the lock_pairs cycle check? (CS50) TIDEMAN - PROBLEM SET 3 | SOLUTION
#include <cs50.h> #include <stdio.h> #include <string.h>
Use any sorting algorithm (e.g., selection sort or bubble sort) to sort pairs by the calculated strength in descending order. 5. void lock_pairs(void) Cs50 Tideman Solution
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Populate the pairs array with all pairs of candidates where one is preferred over the other.
return true;
Once a voter's ranks are established, the record_preferences function updates the global preferences matrix.
We will write a helper that answers: "Starting from the loser, can I eventually reach the winner using existing locked edges?"
winner, ranked_candidates = tideman_election(candidates, voter_preferences) print("Winner:", winner) print("Ranked Candidates:", ranked_candidates) // Get the ranked preferences for each voter
: Once a voter’s full ranking is validated, you must update the global preferences[i][j] 2D array. This array tracks how many voters preferred candidate over candidate
If you are still struggling, it's normal—this problem is designed to stretch your understanding of algorithms. Keep practicing, and consider checking out community discussions on GitHub Gist for alternative implementation ideas.