Base-36 string addition
You need to add two base-36 strings made of digits and letters without converting them to integers (so no overflow) and return the result as a string. How do you implement the per-digit conversion, carry handling, and leading zero removal?
CS fundamentals and algorithmsShort answerIntro
A Swift string mixes ()[]{} and you're checking with a stack whether they nest correctly.…
#string
SecurityShort answerAdvanced
A security audit says card numbers, passwords, and PINs stay in process memory after they…
#string
SwiftShort answerAdvanced
Why can't you index a String with an integer like text[3], and why is text.count O(n)?
#string