Leetcode 393: UTF-8 Validation
Question
A character in UTF8 can be from 1 to 4 bytes long, subjected to the following rules:
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Leetcode 392: Is Subsequence
Question Given a string s and a string t, check if s is subsequence of t. [Read More] -
Leetcode 390: Elimination Game
Question There is a list of sorted integers from 1 to n. Starting from left to right, remove the first number and every other number afterward until you reach the end of the list. [Read More] -
Leetcode 389: Find the Difference
Question Given two strings s and t which consist of only lowercase letters. [Read More] -
Leetcode 388: Longest Absolute File Path
Question Suppose we abstract our file system by a string in the following manner: [Read More] -
Leetcode 387: First Unique Character in a String
Question Given a string, find the first non-repeating character in it and return it’s index. If it doesn’t exist, return -1. [Read More] -
Leetcode 386: Lexicographical Numbers
Question Given an integer n, return 1 - n in lexicographical order. [Read More] -
Leetcode 385: Mini Parser
Question Given a nested list of integers represented as a string, implement a parser to deserialize it. [Read More] -
Leetcode 384: Shuffle an Array
Question Shuffle a set of numbers without duplicates. [Read More] -
Leetcode 383: Ransom Note
Question Given an arbitrary ransom note string and another string containing letters from all the magazines, write a function that will return true if the ransom note can be constructed from the magazines ; otherwise, it will return false. [Read More] -
Leetocde 382: Linked List Random Node
Question Given a singly linked list, return a random node’s value from the linked list. Each node must have the same probability of being chosen. [Read More] -
Leetcode 380: Insert Delete GetRandom O(1)
Question Design a data structure that supports all following operations in average O(1) time. [Read More] -
Leetcode 379: Design Phone Directory
Question Design a Phone Directory which supports the following operations: [Read More] -
Leetcode 378: Kth Smallest Element in a Sorted Matrix
Question Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. [Read More] -
Java 8 Stream
Before we look into Java Stream API Examples, let’s see why it was required. Suppose we want to iterate over a list of integers and find out sum of all the integers greater than 10. [Read More]