Jorge M. Londoño

icon company UPB icon location Medellín, Colombia icon location I am a professor at the Universidad Pontificia Bolivariana, and I like programming a lot, particularly in programming languages like Java and Python.

Results 6 comments of Jorge M. Londoño

Transaction simulation failed: Attempt to debit an account but found no record of a prior credit

I had the same problem. In my case the error was sending the transaction to 'mainnet-beta' instead of 'devnet'.

We need exercises about recursion functions

A good problem: The Russian multiplication algorithm in recursive form.

We need exercises about recursion functions

Other recursive problems: - Decimal to binary conversion - Decimal to base P conversion

We need some examples about Strings and StringBuilder

One of the best uses of StringBuilder is implementing the .toString() method of abstract data types. Take for example returning the String representation of a Set: "{a,b,c,...}", a vector: "[1,2,3]",...

We need some examples about Strings and StringBuilder

How about this problem: Convert a int/long to its base B representation (e.g. to Hexadecimal) Also interesting from the performance perspective to compare implementations using String concatenation vs using a...

We need some problems and code about conditions, switch, if-else, ternary operator. Easy, hard and medium

I have a good problem about conditionals to propose: Given two poker hands, which is the winning hand?