LeetCode 1235: Maximum Profit in Job Scheduling
Problem DescriptionWe have n jobs, where every job is scheduled to be done from startTime[i] to endTime[i], obtaining a profit of profit[i].You're given the startTime, endTime and profit arrays, retur
LeetCode 2781: Length of the Longest Valid Substring
Problem DescriptionYou are given a string word and an array of strings forbidden.A string is called valid if none of its substrings are present in forbidden.Return the length of the longest valid subs
Java Miscellaneous
Sort a two-dimensional array:Suppose intervals is a two-dimensional array int[][].Arrays.sort( intervals, (a,b)->Integer.compare(a[0], b[0]) );Note how the lambda expression is writte. Or you can w
Common Concepts and Algorithms for Coding Interview
This post summarizes several common concepts and algorithms that can be helpful for coding interview. The concept is taken from the Book: Cracking the Coding Interview.Bit ManipulationBit operations:
Basic Data Structures
OverviewThis post will cover several data structures which are important for coding interview. Definitions, implementations, and common usages will be discussed. The following data structures are incl