The HireReady 50

When is the two-pointer technique most effective?

What's the time complexity to check if two strings are anagrams using a hash map?

To find the number of subarrays with sum equal to k, what do you store in the hash map?

Which scenario is BEST suited for Breadth-First Search (BFS)?

What special property does inorder traversal have for a Binary Search Tree?

Which technique correctly detects cycles in a DIRECTED graph?

For finding LCA of two nodes in a binary tree, what is the key insight?

Which characteristic suggests a problem can be solved with Dynamic Programming?

What is the main advantage of tabulation over memoization?

Which algorithm detects a cycle in a linked list using O(1) space?

What is the time complexity to search for a word of length L in a Trie?

Topological sort is possible if and only if the graph is:

Why does Dijkstra's algorithm fail with negative edge weights?

Which problem type is BEST suited for backtracking?

What is the key difference between `let` and `var` in JavaScript?

In what order do these execute? console.log("A"); setTimeout(() => console.log("B"), 0); Promise.resolve().then(() => console.log("C")); console.log("D");

What will this code output? for (var i = 0; i < 3; i++) { setTimeout(() => console.log(i), 100); }

Which CSS properties center a child both horizontally and vertically in a flex container?

Which selector has the HIGHEST specificity?

TypeScript ___ are erased at compile time and provide ___ type checking.

A Promise can be in one of three states: ___, ___, or ___.

Horizontal scaling adds more ___ while vertical scaling adds more ___ to a single machine.

Which caching strategy ensures the cache is always consistent with the database?

What is the primary challenge when implementing database sharding?

When should you use a NoSQL database over SQL?

Which load balancing algorithm ensures requests from the same client go to the same server?

What is the PRIMARY benefit of using a CDN (Content Delivery Network)?

In CAP theorem, why do many NoSQL databases choose AP (Availability + Partition tolerance) over CP?

Tell me about a time you disagreed with a team member about a technical approach. Which response best demonstrates professional conflict resolution?

Describe a project that failed or didn't meet expectations. What did you learn?

Describe a situation where you had to deal with a difficult stakeholder or customer. Which response shows strong empathy and problem-solving?

Tell me about a time you had to deliver a project under a very tight deadline. Which approach demonstrates effective crisis management?

How have you helped a junior developer grow in their role? Which mentorship approach is most effective?

Give an example of when you went above and beyond to help a teammate. Which scenario best demonstrates collaborative excellence?

How do you handle multiple urgent priorities with competing deadlines? Which approach demonstrates strong prioritization skills?

What makes a "I gave constructive feedback" story credible?

Why should you NOT directly mutate state in React (e.g., state.push(item))?

What happens if you omit the dependency array from useEffect?

What is the difference between useMemo and useCallback?

What is the primary benefit of horizontal scaling over vertical scaling?

In CAP theorem, what does "P" (Partition Tolerance) mean?

What does rate limiting protect against?

What is the key difference between REST and GraphQL?

A manager asks: "Tell me about a time you led a project." What is the MOST important element to include?

When asked "Tell me about a conflict with a coworker," what should you emphasize?