Given an absolute path for a file (Unix-style), simplify it. Or in other words, convert it to the canonical path.
String - 67. Add Binary
Given two binary strings, return their sum (also a binary string).
String - 44. Wildcard Matching
Given an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*'.
string- 43. Multiply Strings
Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string.
String - 8. String to Integer (atoi)
8.String to Integer (atoi) Implement atoi which converts a string to an integer. The function first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, starting from this character, takes an optional initial plus or minus sign followed by as many numerical digits as possible, and interprets them as a numerical value. The string can contain additional characters after those that form the integral number, which are ignored and have no effect....