azeemmohd

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

azeemmohd

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

azeemmohd

import java.util.ArrayList;
import java.util.List;

/**
 * 
 * @author azeem
 *
 */

public class TurtleStrawBerry {

azeemmohd

बचपन मे ,
सुबह सुबह सब खिलखिलाते,
स्कूल जाते, 
शाम को ख़ुशी ख़ुशी घर आते ,
रात मे बैटमैन बनने के, सपने पिरोते । 
जब से व्यसक हुए,
जीवन हमारा ऐसा 
मानो पेंडुलम जैसा,
रोबोट की तरह दफ्तर जाते ,
थक, हार कर घर वापस आते ,

azeemmohd

	public static String doStuff(int n, int j, int k) {
		String s = formN(n);
		return s.substring(j, k+1);
		
	}


	private static String formN(int n) {
		StringBuilder sb = new StringBuilder("");
		for(int i = 0; i<=n; i++){

azeemmohd

public static void sumOfNumsFormedByPaths(Node root, ArrayList<String> nums, String sb) {
		if(root == null) {
			return;
		}

		sb+=root.data;

		if(root.right == null && root.left == null) {
			nums.add(sb);
		}