My solved challenges and hacks (with Go, Python and Java)

Problems are from: Hackerrank, Leetcode, codility and random problems that I find on Internet. Every end folder (or folder leaf) has the same name of the problem.

Go stuff:

-Data structures (maps, container/ list, heap, tries, graphs, tree, sorting, priority queues, binary search)

-Generate Go code with encoding/gob

-Open, Create files with package "os"

-Read input and write output with package "bufio"

-Read/write png,jpg images "io"

-Regular expressions and string manipulation "strings" "strconv"

-Big integers "math/big"

-Goroutines, channels and concurrency