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Loops let you repeat code without copying. Learn while, for, and do-while to iterate over data.
The Goal
The concept of iteration
Basic while loop structure
How to write while loops
Understanding the test
Test understanding
Using loops to count
Loops that never stop
Variables that control loops
Test understanding
Counting made simple
Structure breakdown
Starting the loop
When to keep going
Repetition basics
Advancing the counter
Basic for loop
Test understanding
Standard forward iteration
Reverse iteration
Post-check loop
Non-unit increments
Loop with accumulator
Test understanding
When to use each
Execute then check
Condition-based loop
How to write do-while loops
Guaranteeing first execution
Condition-based loop
Test understanding
Stopping loops mid-execution
When to exit early
Multiplication loop
Loop exit
Jumping to next iteration
When to use continue
Skip iteration
Test understanding
Multi-level iteration
Common use cases
Avoiding boundary bugs
Adding values in a loop
Finding dangerous patterns
Main approach
Breaking down the solution
Repetition basics
Working solution
Following the execution
What we learned
Checking lucky property
Main approach
Breaking down the solution
Repetition basics
Working solution
Following the execution
What we learned
What we learned
