Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target.

Given a string A representing JSON object. Return an array of the string denoting JSON object with proper indentation.

Divide two integers without using multiplication, division and mod operator. Return the floor of the result of the division.

Given a string A representing JSON object. Return an array of the string denoting JSON object with proper indentation. Rules for proper inde

Multiply Strings in C++, without using libraries for this purpose.

Given two binary strings, return their sum (also a binary string). Example: a = "100" -> 4 in decimal b = "11" -> 3 in decimal Return a +

Given a string A representing a roman numeral. Convert A into an integer. A is guaranteed to be within the range from 1 to 3999.

Given an integer A, convert it to a roman numeral, and return a string corresponding to its roman numeral version.

Implement atoi to convert a string to an integer.

Given a string A. Return the string A after reversing the string word by word.