Microsoft Interview experience | Set 120 (For Senior SDE)

1. Smallest non negative number in a array
2. Given a grid with costs in each cell.You can enter through any item in Row 0 and exit through any row n-1. Find the minimum cost path

1. Connect all nodes at same level in a Binary Tree
2. Median in a running stream of numbers

1. Design a group chat both front end and back end.

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