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Grokking the Coding Interview Patterns

Solution: Optimal Account Balancing

Explore how to solve the optimal account balancing problem by calculating net balances and applying backtracking with depth-first search to reduce the minimum number of transactions needed to settle all debts among multiple people.

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Statement

Given a list of transactions, where each transaction is represented as transactions[i]=[fromi, toi, amounti]transactions[i] = [from_i,~ to_i,~amount_i] ...