Add time and space complexity information to various algorithms (#744)

* Add time and space complexity information to various algorithms

* Added the implementation of Kosaraju algorithm

* Added some style issues in articulationpoints.go

* Formatted code with gofmt -s to meet style requirements

---------

Co-authored-by: Rak Laptudirm <rak@laptudirm.com>

Author: mapcrafter2048

cache/lru.go

@@ -1,3 +1,10 @@
+// lru.go
+// description : Least Recently Used (LRU) cache
+// details : A Least Recently Used (LRU) cache is a type of cache algorithm used to manage memory within a computer. The LRU algorithm is designed to remove the least recently used items first when the cache reaches its limit.
+// time complexity : O(1)
+// space complexity : O(n)
+// ref : https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU)
+
 package cache
 
 import (

checksum/crc8.go

@@ -3,6 +3,8 @@
 // details:
 // A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks
 // and storage devices to detect accidental changes to raw data.
+// time complexity: O(n)
+// space complexity: O(1)
 // See more [CRC](https://en.wikipedia.org/wiki/Cyclic_redundancy_check)
 // author(s) [red_byte](https://github.com/i-redbyte)
 // see crc8_test.go