Valid Number LeetCode and Interviewbit solution guide

Coding Interview Questions

Question: Valid Number Validate if a given string is numeric. Some examples: “0” => true” 0.1 ” => true”abc” => false”1 a” => false”2e10″ => true Note: It is intended for the problem statement to be ambiguous. You should gather all requirements upfront before implementing one. Update (2015-02-10):The signature of the C++ function had been updated. If you still see your function signature accepts an const char * argument, please … Read more

Longest Substring Without Repeating Characters

Coding Interview Questions

Given a string, find the length of the longest substring without repeating characters. Examples: Given “abcabcbb”, the answer is “abc”, which the length is 3. Given “bbbbb”, the answer is “b”, with the length of 1. Given “pwwkew”, the answer is “wke”, with the length of 3. Note that the answer must be a substring, “pwke” is a subsequence and not a substring. Solution: Please see the below … Read more