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Grokking the Coding Interview Patterns in Python

Solution: Optimal Account Balancing

Explore the backtracking approach to solve the optimal account balancing problem by recursively pairing debts and credits to minimize transactions. Understand how to compute net balances, apply depth-first search, and backtrack for the best solution in complex debt settlement scenarios.

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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] ...