Engrain by ByteRush

DSA.05 0 concepts

Warm-ups (20)

Build fluency on easy problems before patterns.

    Practice rooms

    • Warm-up set A (strings and numbers)reverse-string · count-vowels · palindrome-check · capitalize-words · character-frequency · is-anagram · sum-of-digits · binary-to-decimal · fizzbuzz · factorial-iterative
    • Warm-up set B (arrays)max-in-array · second-largest · find-duplicates · remove-falsy · array-intersection · rotate-array-by-k · merge-sorted-arrays · missing-number · flatten-one-level · fibonacci-iterative

    Interview questions in this module

    1. Reverse a string without using reverse().
    2. Check whether two strings are anagrams. What is the complexity?
    3. Find the missing number in an array of 1..n.