Real questions from top companies · easy
Explain the difference between mutable and immutable objects in Python.
Explain the differences between multiprocessing and multithreading.
Explain the internal working of a HashMap
Explain this code: [f(2) for f in [lambda x: x * i for i in range(5)]].
Fibonacci Series Problem - solve using brute force and optimized approaches
Find pairs with sum X from a list of numbers
Find the Lowest Common Ancestor (LCA) in a Binary Tree.
Find the minimum and maximum values in an array
Find the next greatest element in a linked list.
Find the three numbers from a list whose multiplication equals 180
Finding Complete String Pairs - identify pairs of strings that when concatenated contain all 26 English alphabets
Flatten nested lists recursively using Python
Garbage Collector in Python - explain
Given a list of integers, write a Python function to return the number of unique pairs that sum up to a target.
Given a list of intervals, merge the overlaps. How do you optimize it?
Given a string 'AAAVGXFHHFSGFGGLK', find the non-repeating letters.
Given an n-ary tree, write code to flatten it and store the output in a list.
Given the Infix, Prefix, or Postfix notation of an expression, write the code to compute the final result.
Given the input string "AAABBBCCCDDDAAA," compress it to output "A3B3C3D3A3."
How are strings handled in Scala? How are they different from Java strings?
Type or paste your answer to any of these questions and our AI Coach scores it, highlights gaps, and rewrites it at FAANG quality. Free to try.