Wikipedia: Quicksort, Merge Sort

algorithms-data-structures

Continually updated IPython Notebooks containing coding problems and solutions (algorithms and data structures).

Arrays and Strings

• Determine if a string contains unique characters
• Reverse characters in a string
• Determine if a string is a permutation of another
• Encode spaces in a string in-place
• Compress a string
• Determine if a string is a rotation of another

Linked Lists

• Implement a linked list with insert, find, delete, and print methods
• Remove duplicates from a linked list
• Find the kth to last element of a linked list
• Delete a node in the middle of a linked list, given access to only that node
• Partition a linked list around a given value
• Add two numbers whose digits are stored in a linked list in reverse order
• Find the start of a linked list loop
• Determine if a linked list is a palindrome

Stacks and Queues

• Implement a stack with push, pop, and peek methods using a linked list
• Implement a queue with enqueue and dequeue methods using a linked list
• Implement n stacks using a single array
• Implement a stack that keeps track of its minimum element
• Implement a set of stacks class that wraps a list of stacks, each bound by a capacity
• Implement the Towers of Hanoi with 3 towers and N disks

Hacker Rank

• Utopian Tree

License

Copyright 2015 Donne Martin

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
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