How to Sum Consecutives in Java
The challenge
You are given a list/array which contains only integers (positive and negative). Your job is to sum only the numbers that are the same …
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In-depth guides, insights, and best practices for modern software engineering
Replacing Occurences of Words in Java
The challenge
You are given a string. You must replace any occurrence of the sequence coverage by covfefe, however, if you don’t find the word …
Convert String to LeetSpeak in Java
The challenge
Your task is to write a function toLeetSpeak that converts a regular english sentence to Leetspeak.
More about LeetSpeak You can read at …
Read Article →Ordered Count of Characters in Python
The challenge
Count the number of occurrences of each character and return it as a list of tuples in order of appearance. For empty output return an …
Read Article →Credit Card Issuer Checking in Java
The challenge
Given a credit card number we can determine who the issuer/vendor is with a few basic knowns.
Complete the function getIssuer() that …
Find Count of Most Frequent Item in an Array in Java
The challenge
Complete the function to find the count of the most frequent item of an array. You can assume that input is an array of integers. For an …
Read Article →Return Nth Smallest Element in Java
The challenge
Given an array/list [] of integers, Find the Nth smallest element in this array of integers
- Array/list size is at least 3 . …
What temperature does your Mac CPU idle at?
Sometimes you will find that your Mac is running very hot, and you may want to keep track of it over time to see if it’s persistent or only a …
Read Article →Split String into Parts in Java
The challenge
Split a given string into different strings of equal size.
Example:
Split the below string into other strings of size #3 …[Solved] ERROR 1030 (HY000): Got error 168 from storage engine
If you are getting the following error in MySQL:
ERROR 1030 (HY000): Got error 168 from storage engine
Then this usually means that your server has …
Read Article →Largest Pair Sum in Array in Python
The challenge
Given a sequence of numbers, find the largest pair sum in the sequence.
For example
[10, 14, 2, 23, 19] --> 42 (= 23 + 19)
[99, 2, …Alphabet Symmetry in Python
The challenge
Consider the word "abode". We can see that the letter a is in position 1 and b is in position 2. In the alphabet, a and b are …