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CodeSignal

Easy Interview Coding Practice in PHP

via CodeSignal

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Overview

Start your coding interview preparation with easy-level PHP problems. This course will help you build a solid foundation by solving common problems like reversing a string, finding the maximum number in a list, and checking for prime numbers. These exercises will enhance your problem-solving skills and boost your confidence for the coding interviews.

Syllabus

  • Unit 1: String Manipulation Fundamentals in PHP
    • Finding Vowel Positions in a String
    • Shift Letters by One in Alphabet
    • Transform String Case Without Built-in Functions
    • Replace Character in String Without Built-in Functions
    • Swap Adjacent Characters in a String
    • Palindrome Checker Without Built-in Functions
  • Unit 2: Basic Array Operations in PHP Without Built-in Functions
    • Find the Minimum Element in an Array
    • Count Even and Odd Integers in an Array
    • Count Occurrences of Minimum Element in an Array
    • Find the Second Largest Number in an Array
  • Unit 3: Standard Math Algorithms in PHP
    • Perfect Square Checker Task
    • Next Prime Number Calculation
    • Prime Factorization in PHP
    • Check if Two Numbers are Coprime in PHP
    • Finding the n-th Prime Number
  • Unit 4: Array Operations Without Built-in Functions in PHP
    • Find the First Occurrence Index of a Value in an Integer List
    • Counting Unique Elements in a List
    • Reversing an Integer List Without Built-in Functions
    • Shift List Elements Circularly
    • Determine if a List is a Contiguous Subarray
  • Unit 5: Simple Recursion in Practice with PHP
    • Sum of Numbers Using Recursion
    • Generate a List from N to 1 Using Recursion in PHP
    • Sum of Digits Raised to Their Positions Using Recursion in PHP
    • Reverse a String Using Recursion in PHP
    • Fibonacci Sequence with Recursion in PHP

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