All things java , data structures and algorithms

• Java basics

  • Running code using the terminal covering custom class path
  • Read and dump command line arguments
  • max of 3 nos
  • nth fibonacci no, factorial
  • find occurance of x in a integer n
  • reverse an integer, isPalindrome (leverage reverseInteger)
  • check if the no is prime or not
  • conditionals, switch, var args
  • armstrong no (sum of cubes of all digits == n)

• array, arraylists, 2d array

  • lists, arraylists, multi-d arrays, reverse a list, find max
  • split array into positive, negative integers cleanly
  • leetcode 1295 - find nos with even digits in an array = leetcode 1470 - shuffle/rearrange a array of size 2n

• search

  • linear search, binary search, order agnostic bin search

• binary search

  • find ceiling, floor for a no in an array
  • leetcode754 - find celing in char array
  • leetcode34 - find (start, end) in sorted array for target
  • binSearch on an infinite sorted array (amz)
  • leetCode852 - find index of peak in mountain array

• threads

  • basic code to print100 nos all in their own threads
  • threadpool - print100 nos constrained by the pool size