The Number of the Smallest Unoccupied Chair

Find the Length of the Longest Common Prefix Problem

Extra Characters in a String Problem

Modify Graph Edge Weights Problem

Number of Senior Citizens Problem

Build a Matrix With Conditions Problem

Find Valid Matrix Given Row and Column Sums Problem

Step-By-Step Directions From a Binary Tree Node to Another

Find the Winner of the Circular Game

Merge Nodes in Between Zeros Problem

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