Moonfrog Labs Interview Experience | Set 4
1. Topological sort.
2. Reverse linked list in pairs. (1->2->3->4 to 2->1->4->3)
3. Print a binary tree in spiral order
4. Reverse an array without using subtract sign ‘-‘ anywhere in your code.
5. One DP problem in a 3*3 matrix which I don’t remember exactly.
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