Two strings s and t are isomorphic if you can replace the characters in s to get t. The replacement should be such that each character in s maps to exactly one character in t, and the mapping must preserve the order of characters. No two characters in s or t can map to the same character.
Given an array of integers, determine if there are any duplicate values present. Return true if any value appears more than once, otherwise return false.
Given an integer array, find all elements that appear more than ⌊n/3⌋ times, where n is the length of the array. Your task is to return a list of all such elements.
You are given two strings, s and t. Determine if t is an anagram of s. Two strings are considered anagrams if they contain the exact same characters, but possibly in a different order.
