This is a premium problem. We're working on making it available for free soon.
Explore Free ProblemsSolutions for this premium problem will be available for free soon.
Browse Free ProblemsWatch expert explanations and walkthroughs
Practice problems asked by these companies to ace your technical interviews.
Explore More ProblemsJot down your thoughts, approach, and key learnings
Yes, variations of ternary expression parsing appear in coding interviews at top tech companies. Interviewers often use it to test string parsing skills, stack usage, and understanding of operator associativity.
Yes, recursion can be used by identifying the matching ':' for each '?' and evaluating the appropriate branch recursively. This approach mirrors how ternary expressions are structured but may require careful handling of indices and nested segments.
A stack is the most suitable data structure because it helps manage intermediate values while parsing the expression from right to left. It allows easy retrieval of the two candidate results for each ternary condition and simplifies nested evaluations.
The optimal approach is scanning the expression from right to left using a stack. Because ternary expressions are right-associative, this direction naturally evaluates nested conditions. Each time a pattern like condition ? value1 : value2 appears, the correct value is pushed back to the stack.