Choose Between For and While Loops

# Choose Between For and While Loops Compare `for` loops and `while` loops. Explain when each communicates intent better, how initialization and progress are controlled, and which failure modes reviewers should watch for. Use concrete examples without relying on one language's syntax alone. ### Constraints & Assumptions - Both constructs can often express the same computation. - Readability, termination, mutation, and iterator safety matter more than personal style. ### Clarifying Questions to Ask - Is the discussion about a specific language or general control flow? - Are collection iteration, numeric ranges, or condition-driven repetition most relevant? ```hint Match syntax to the stopping rule Choose the construct that makes the source of progress and termination easiest to see. ``` ### What a Strong Answer Covers - Counted or collection iteration versus condition-driven repetition. - Scope and placement of initialization, condition, and update. - Off-by-one, nontermination, and mutation hazards. - Cases where iterators or higher-level operations are clearer than either loop. ### Follow-up Questions - When can modifying a collection during iteration be safe? - How would you review a loop whose progress occurs in several branches?