yeedle

import java.util.*;
import java.util.stream.*;

class CountingOccureences {
  public static void main(String[] args) {
    
    String example = "The quick brown fox jumps over the lazy dog and the dog catches the fox";
    
    System.out.println(countOccurences(example.replaceAll("\\s", ""), "")); 
    // output: {a=3, b=1, c=3, d=3, e=6, f=2, g=2, h=5, i=1, j=1, k=1, l=1, m=1, n=2, o=6, p=1, q=1, r=2, s=2, t=5, u=2, v=1, w=1, x=2, y=1, z=1}

yeedle

import java.util.*;
import java.util.stream.*;
import java.util.concurrent.atomic.*;

class StringToIntConversion {
  public static void main(String[] args) {
    
    String binary = "01110";
    System.out.println(Integer.valueOf(binary, 2));
    System.out.println(toRadix(binary, 2));

yeedle

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.