₦airaland Forum

Hello,
I am following a YouTube video on dynamic programming. So the guy solve a problem on number of route available in a given grid that requires you to go right or down. He did the solution in JavaScript, I am having problem to replicate it in Java.
This is the JavaScript function:

const gridtravel = (m, n, memo = {} => {
 const key = m + ',' + n;
 if (key in memo) return memo[key];
 if(m === 1 && n === 1) return 1;
 if(m === 0 || n === 0) return 0;
 memo[key] = gridtravel(m - 1, n, memo) + gridtravel(m, n - 1, memo);
  return memo[key];
 }

This is my trial in Java;

public static int gridTravel (m, n){
Map<String, Integer> memo = new Map<>();
 String key = m + ',' + n;
 if (memo.contains(key)) return memo.get(key);
 if(m == 1 && n == 1) return 1;
 if(m == 0 || n == 0) return 0;
 memo.put(key, gridtravel(m - 1, n) + gridtravel(m, n - 1));
  return memo.get(key);
}

I don't know how to replicate with the memo object use in JavaScript. The function is suppose to have two parameter of row and column.
This approach is trying to get an optimized solution
Cc
qtguru et al

Omo! No show here.
I have gotten a way around it sha. If only JS was strongly typed language, I would have known the types used.

@ airsaylongcome Trust you are doing good.
Abeg na open source recommendation I want for Staff Invigilation scheduling (with regard to exams or so) and creating a journal management site.
For the journal management, I stumbled upon Open Journal System (OJS) and luckily, they have a youtube channel which I am already going through but no luck with that of the invigilation.

Thanks in anticipation of your response.

islamics:
@ airsaylongcome Trust you are doing good.
Abeg na open source recommendation I want for Staff Invigilation scheduling (with regard to exams or so) and creating a journal management site.
For the journal management, I stumbled upon Open Journal System (OJS) and luckily, they have a youtube channel which I am already going through but no luck with that of the invigilation.

Thanks in anticipation of your response.

www dot abc-roster dot com
This isn't open source but I've used it in a rush

www dot optaplanner dot org
Open source but has a learning curve

Also
github dot com/LandRover/StaffjoyV2

airsaylongcome:
www dot abc-roster dot com
This isn't open source but I've used it in a rush

www dot optaplanner dot org
Open source but has a learning curve

Also
github dot com/LandRover/StaffjoyV2

Thanks very much Sir; this is well appreciated.