Write a function to recursively reverse a string.
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Find intersection of two unsorted arrays?
Normalization questions coding question: Program to find the element occurring odd number of times in an array Complexity
Return top 10 most used words in a string
Design a stack with min(stack) operation in constant time
When do you use an array versus a linked list?
If there are 'n' computers connected in a circular node, what is the minimum hop required to reach the diagonally opposite computer, and what is the max possible hops. Use any algorithm to hop through computers.
Layout the fundamental objects to build a restaurant reservation system.
1. Find common elements between two arrays of integers. 2. Find cycles in a graph. 3. Efficiently find duplicate elements in an array of numbers with bounded entries (for example, elements are between 0 and 99). 4. Reverse word sequence in a string inplace. 5. Efficiently find all Pythogorean triplets in a given array of integers. 6. Find all anagrams in a list of words. 7. Set operations.
Regular Expression for finding US Zip Codes ?
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