return -1;
The strength of a victory is determined by the margin: preferences[winner][loser] . The goal of sort_pairs is to sort the pairs array in decreasing order of this margin. In other words, the most decisive victories should come first.
While there are many sorting algorithms you could use (like bubble sort or selection sort), a selection sort is a reliable choice for this problem. Here's a standard approach: Cs50 Tideman Solution
Tideman is notoriously difficult to debug, but these tips will help you avoid common pitfalls:
If a column j has all false values across all rows i , that candidate has no incoming edges. Print the name of that candidate and exit. Common Pitfalls and Debugging Tips return -1; The strength of a victory is
Ensure your sorting algorithm properly handles pairs with equal margins without breaking the structure.
So the correct helper:
for (int i = 0; i < candidate_count; i++) if (locked[loser][i]) if (creates_cycle(winner, i)) return true;
Lock in pairs to the locked graph, unless it creates a cycle. Logic: Use a recursive function to check if the loser can reach the winner in the current graph. While there are many sorting algorithms you could