Detailed insights from real candidates who interviewed at top tech companies
1. Round 1 (DSA Problem – Classic Coin Change Variant) - Given target N (people to cover) and sizes array, find the minimum number of coins needed to cover exactly N. If no exact combination exists, return -1. - Examples: N = 5, sizes = [3,5] → 1 N = 7, sizes = [3,5] → -1 2. Round 2 (LLD...

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