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NeetCode 150 / 2-D Dynamic Programming
14.04 · Problem

Coin Change II

Medium Unbounded knapsack (count combinations) 1 video LC 518 Pro

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Given an amount and coin denominations (unlimited supply of each), return the number of combinations that make up the amount. Order doesn't matter: 1+2 and 2+1 are the same combination.

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Item 114 of 150 · updated 2026-10-12