The Coding Challenge Playbook: Using Loops and Dictionaries

This course is designed for iOS developers who want to sharpen their core programming logic through a targeted, pattern-driven approach to solving coding challenges. Rather than jumping between unrelated problems, this course focuses on mastering two powerful Swift tools: the for-each loop with continue control flow and the dictionary initialization method.Through a carefully curated series of challenge problems, students will learn to identify situations where these patterns apply, and build the discipline of solving problems through a consistent system of repeatable steps. By doing so, they will develop a reusable mental framework for handling common categories of algorithmic problems—such as frequency counting, grouping, filtering, and structural comparison.This course emphasizes clarity, repetition, and intentional constraint: instead of covering every possible Swift feature, it focuses on building strength in just two patterns that appear over and over again in real-world logic and technical interviews.Students will complete challenges like:Counting duplicates in arraysGrouping items by character or numberDetecting when a string or array meets specific frequency-based conditionsBuilding logic flows that skip, accumulate, and selectively build dictionaries through iterationWhether you're preparing for coding interviews, building problem-solving confidence, or reinforcing your command of Swift fundamentals, this course gives you a structured, repeatable system for beating coding challenges with discipline and precision.