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Description: algorithms playground for common questions. Contribute to defcon79/algorithms development by creating an account on GitHub.

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Googlehttps://github.com/sagivo/algorithms/blob/master/src/google-interview-tips.md
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https://patch-diff.githubusercontent.com/defcon79/algorithms#problems
Unique binary search treeshttps://leetcode.com/problems/unique-binary-search-trees/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/unique_bsts.rb
House Robberhttps://leetcode.com/problems/house-robber/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/house-robber.rb
Decode Wayshttps://leetcode.com/problems/decode-ways
clickhttps://github.com/sagivo/algorithms/blob/master/src/decode_ways.rb
Coin changehttps://leetcode.com/problems/coin-change/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/coin-change.rb
Decode Stringshttps://leetcode.com/problems/decode-string/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/decode_string.rb
Wiggle Subsequencehttps://leetcode.com/problems/wiggle-subsequence/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/wiggle_subsequence.rb
Binary Tree Side Viewhttps://leetcode.com/problems/binary-tree-right-side-view/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/binary_tree_side_view.rb
Unix pathhttps://leetcode.com/problems/simplify-path/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/simplify_path.rb
Array Producthttps://leetcode.com/problems/product-of-array-except-self/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/product-of-array.rb
Top K Frequent Elementshttps://leetcode.com/problems/top-k-frequent-elements/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/top-k-elements.rb
Sum 4 arrayshttps://leetcode.com/problems/4sum-ii/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/4-sum.rb
Reverse Linked Listhttps://leetcode.com/problems/reverse-linked-list/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/reverse-linked-list.rb
Reverse String In-placehttps://leetcode.com/problems/reverse-string/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/reverse-string-inplace.rb
Symmetric Treehttps://leetcode.com/problems/symmetric-tree/
clickhttps://github.com/sagivo/algorithms/blob/master/src/mirror.rb
Dijkstra's shortest path between two nodeshttps://en.wikipedia.org/wiki/Dijkstra%27s_algorithm
clickhttps://github.com/sagivo/algorithms/blob/master/src/dijkstra.rb
Kruskal's minimum spanning tree algorithmhttp://en.wikipedia.org/wiki/Kruskal%27s_algorithm
clickhttps://github.com/sagivo/algorithms/blob/master/src/kruskal.rb
Find the square root of a numberhttps://en.wikipedia.org/wiki/Newton%27s_method
clickhttps://github.com/sagivo/algorithms/blob/master/src/sq_root.rb
Add two binary numbershttps://leetcode.com/problems/add-binary/description/
clickhttps://github.com/sagivo/algorithms/blob/master/src/add_binary.rb
Binary searchhttps://en.wikipedia.org/wiki/Binary_search_algorithm
clickhttps://github.com/sagivo/algorithms/blob/master/src/binary_search.rb
Longest increasing subsequencehttp://en.wikipedia.org/wiki/Longest_increasing_subsequence
clickhttps://github.com/sagivo/algorithms/blob/master/src/longest_increasing_subsequence.rb
Find all permutations of arrayhttps://en.wikipedia.org/wiki/Permutation
clickhttps://github.com/sagivo/algorithms/blob/master/src/permutations.rb
Finding all combinations of well-formed bracketshttp://stackoverflow.com/questions/727707/finding-all-combinations-of-well-formed-brackets
clickhttps://github.com/sagivo/algorithms/blob/master/src/brackets_combinations.rb
Finding the powerset of a sethttp://en.wikipedia.org/wiki/Power_set
clickhttps://github.com/sagivo/algorithms/blob/master/src/powerset.rb
Game of lifehttps://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
clickhttps://github.com/sagivo/algorithms/blob/master/src/game_of_life.rb
clickhttps://github.com/sagivo/algorithms/blob/master/src/join_sets.rb
count and sayhttps://leetcode.com/problems/count-and-say/
clickhttps://github.com/sagivo/algorithms/blob/master/src/count_and_say.rb
Telephone number to wordshttp://www.mobilefish.com/services/phonenumber_words/phonenumber_words.php
clickhttps://github.com/sagivo/algorithms/blob/master/src/phone.rb
Maximum contiguous subarrayhttps://leetcode.com/problems/maximum-subarray
clickhttps://github.com/sagivo/algorithms/blob/master/src/max_subarray.rb
Find the smallest biggest number that has the same digitshttp://stackoverflow.com/questions/9368205/given-a-number-find-the-next-higher-number-which-has-the-exact-same-set-of-digi
clickhttps://github.com/sagivo/algorithms/blob/master/src/bigger_num_with_same_digits.rb
Find the minimum insertions needed to make a word palindromehttp://www.geeksforgeeks.org/dynamic-programming-set-28-minimum-insertions-to-form-a-palindrome/
clickhttps://github.com/sagivo/algorithms/blob/master/src/min_insertions_for_palindrome.rb
String matching - Knuth Morris Pratt algorithm KMPhttp://en.wikipedia.org/wiki/Knuth%E2%80%93Morris%E2%80%93Pratt_algorithm
clickhttps://github.com/sagivo/algorithms/blob/master/src/kmp.rb
Balanced Parentheseshttp://stackoverflow.com/questions/14930073/how-to-check-if-a-string-is-balanced
clickhttps://github.com/sagivo/algorithms/blob/master/src/balanced_parentheses.rb
Quicksort algorithmhttp://en.wikipedia.org/wiki/Quicksort
clickhttps://github.com/sagivo/algorithms/blob/master/src/quicksort.rb
Mergesort algorithmhttps://en.wikipedia.org/wiki/Merge_sort
clickhttps://github.com/sagivo/algorithms/blob/master/src/merge_sort.rb
Max Stocks Profithttps://leetcode.com/problems/best-time-to-buy-and-sell-stock/
clickhttps://github.com/sagivo/algorithms/blob/master/src/stocks.rb
Countingsort algorithmhttp://en.wikipedia.org/wiki/Counting_sort
clickhttps://github.com/sagivo/algorithms/blob/master/src/counting_sort.rb
Shellsort algorithmhttp://en.wikipedia.org/wiki/Shellsort
clickhttps://github.com/sagivo/algorithms/blob/master/src/shell_sort.rb
Knapsack problemhttp://en.wikipedia.org/wiki/Knapsack_problem
clickhttps://github.com/sagivo/algorithms/blob/master/src/knapsack.rb
clickhttps://github.com/sagivo/algorithms/blob/master/src/knapsack2.rb
Move Zeroeshttps://leetcode.com/problems/move-zeroes
clickhttps://github.com/sagivo/algorithms/blob/master/src/move_zeroes.rb
Longest common subsequence problemhttps://en.wikipedia.org/wiki/Longest_common_subsequence_problem
clickhttps://github.com/sagivo/algorithms/blob/master/src/longest_common_subsequence.rb
clickhttps://github.com/sagivo/algorithms/blob/master/src/longest_increasing_subsequence.rb
Monty Hall Problemhttps://en.wikipedia.org/wiki/Monty_hall_problem
clickhttps://github.com/sagivo/algorithms/blob/master/src/monty_hall.rb
Eucliden and Extended Eucliden algorithmhttp://en.wikipedia.org/wiki/Extended_Euclidean_algorithm
clickhttps://github.com/sagivo/algorithms/blob/master/src/gcd.rb
clickhttps://github.com/sagivo/algorithms/blob/master/src/sugget_index_in_array.rb
Range minimum query sparse table algorithmhttp://en.wikipedia.org/wiki/Range_minimum_query
clickhttps://github.com/sagivo/algorithms/blob/master/src/rmq.rb
Insertion Sorthttps://en.wikipedia.org/wiki/Insertion_sort
clickhttps://github.com/sagivo/algorithms/blob/master/src/insertion_sort.rb
Towers of Hanoi using Stackhttps://en.wikipedia.org/wiki/Tower_of_Hanoi
clickhttps://patch-diff.githubusercontent.com/defcon79/algorithms/blob/master/blob/master/src/towers_of_hanoi_with_stack.rb
Tarjan's strongly connected components finderhttps://en.wikipedia.org/wiki/Tarjan%27s_strongly_connected_components_algorithm
clickhttps://github.com/sagivo/algorithms/blob/master/src/tarjan.rb
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