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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 the step-by-step process for calculating net balances and applying depth-first search to find the least number of settlements needed 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], indicating that the person fromifrom_i ...