How to Get All Rows in Ag-Grid
The easiest way to get the content of all rows’ data, back into a Javascript/Typescript array, is as follows.
Simply create a blank array, then …
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In-depth guides, insights, and best practices for modern software engineering
Find the Max Area of an Island in Python
The challenge
You are given an m x n binary matrix grid. An island is a group of 1‘s (representing land) connected 4-directionally (horizontal or …
Using Apache POI to Get or Create a Sheet in Excel using Java
Apache POI provides a mechanism to work with Excel documents.
However, it has a missing feature when you want to only create a new sheet if one with …
Read Article →A Simplistic TCP Finite State Machine (FSM) in Python
The challenge
Automatons, or Finite State Machines (FSM), are extremely useful to programmers when it comes to software design. You will be given a …
Read Article →How to Resolve Scaling Squared Strings in Java
The challenge
You are given a string of n lines, each substring being n characters long. For example:
s = "abcd\nefgh\nijkl\nmnop"
We will …
Read Article →How to Build a Square in Python
The challenge
I will give you an integer. Give me back a shape that is as long and wide as the integer. The integer will be a whole number between 1 …
Read Article →Check if String EndsWith in Python
The challenge
Complete the solution so that it returns true if the first argument(string) passed in ends with the 2nd argument (also a string). …
Read Article →How to add a Git Submodule to an existing codebase
Git submodules are a way of including another repository’s code into an existing codebase, without associating it’s code or tracking …
Read Article →How to LowerCase a String in Python
Python comes with a built-in method on all String types, by calling lower() on a String, you can immediately lower the case of that String.
An example …
Read Article →How to Restart Sound Driver on a Mac
So for some strange reason, your audio has stopped playing through the Macbook Pro speakers, but if you plug in an external audio device, it still …
Read Article →Number to Binary Conversion in Python
If you have a decimal number, and want to get it’s binary value, you can use the built-in bin method.
decimal = 32
binary = bin(decimal)
# …Counting Binary Gaps with Python
The challenge
A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the …
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