Remove All Adjacent Duplicates In String Link Companies: Bloomberg, Facebook, Google, Oracle Given a string S of lowercase letters, a duplicate removal consists of choosing two adjacent and equal letters, and removing them. We repeatedly make duplicate removals on S until we no longer can. Return the final string after all such duplicate removals have …
Given a valid (IPv4) IP address, return a defanged version of that IP address.
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
Given two binary strings, return their sum (also a binary string).