PHP

Basic manipulations with a singly linked list: creating nodes and operations

Updating the Math class: passing a number to the constructor

Case reversal in a string

What will the console output

Building groups of anagrams from a list of words

Level-wise node storage strategy in a database

Converting a flat array into a nested tree hierarchy

Designing the addition of a phone number field to the Tilda user profile

Universal file reading module by extension

Reverse order of nodes in a singly linked list

HTML menu generation from a nested array

Integration of factorial calculation into class method

Detection and correction of errors in the calculation of figure areas

Determining the best indexes to improve SQL query performance

Junior — Senior

МТС

Implementation of a function to calculate factorial

Efficient index selection for queries to a large table

Junior — Senior

МТС

Creating a square matrix from unique positive numbers

Search for the word «Nemo» in the sequence

Merging overlapping ranges

Configuring the string representation of the Math object