README.md

ALG

This contains many useful algorithms.

1. Run

$ ./run.sh
$ ./build-cmake/Debug/random_shuffle_test

2. List of algorithms

2.1 tree traversal

Includes recursively and iteratively algorithms of preorder, inorder and postorder

2.2 combinations

Given two integers n and k, return all possible combinations of k numbers out of 1 ... n

 For example,
 If n = 4 and k = 2, a solution is:
   [
     [2,4],
     [3,4],
     [2,3],
     [1,2],
     [1,3],
     [1,4],
   ]

From leetcode: https://leetcode.com/problems/combinations/

2.3 major elements

Majority element is the element that appears more than ⌊ n/2 ⌋ times

From leetcode: https://leetcode.com/problems/majority-element/

2.4 sort

Includes quick sort, insert sort, select sort, bubble sort, and merge sort

2.5 random shuffle

Randomly shuffle all the value in the array. Must ensure that every value has the same probability of existing in all the positions of the array

2.6 dijkstra

Dijkstra algorithms

2.7 floyd

Floyd algorithms