InCred Finance Senior Android Developer Interview Questions and Answers

Count the number of unique items in an array of strings

• Create a Set to store unique items

• Iterate through the array and add each item to the Set

• Return the size of the Set as the length of the array with unique items

Check if an anagram of a small string exists in a large string

• Create a frequency map of characters in the small string

• Iterate through the large string and check if a substring of the same length has the same frequency map

• Return true if an anagram is found, false otherwise