implementation of dijkstra s shortest path algorithm in java

"217-contains Duplicate (contains repeating elements)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"code Download "Https://github.com/Wang-Jun-Chao"Original QuestionGiven an array of integers, find if the array contains any duplicates. Your function should return TRUE if any value appears at least twice in the array, and i

"204-count Primes (Statistical prime)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"code Download "Https://github.com/Wang-Jun-Chao"Original QuestionDescription:Count the number of prime numbers less than a non-negative number, N.Main TopicCounts the number of primes less than the nonnegative integer n.Thinking of solving

"201-bitwise and of Numbers range (range digits and results)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"code Download "Https://github.com/Wang-Jun-Chao"Original QuestionGiven a range [M, n] where 0 , return the bitwise AND of all numbers in this range, inclusive.For example, given the range [5, 7] , you should return 4

"036-valid Sudoku (verified sudoku chessboard)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionDetermine if a Sudoku is valid, according To:sudoku puzzles-the Rules.The Sudoku board could be partially filled, where empty cells is filled with the character ‘.‘ .　　 A partially filled sudoku which is valid.　　No

"030-substring with concatenation of all Words (concatenation of all words in a substring)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionYou is given a string, s, and a list of words, words, that is all of the same length. Find all starting indices of substring (s) in S that's a concatenation of each word

"008-string to Integer (Atoi) (string converted to integer)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionImplement atoi to convert a string to an integer.Hint:carefully consider all possible input cases. If you want a challenge, please don't see below and ask yourself what is the possible input cases.Note

"066-plus one (plus a)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a non-negative number represented as an array of digits, plus one to the number.The digits is stored such, the most significant digit was at the head of the list.Main TopicGiven a number represented by an array, add an action to it.

"096-unique binary search Trees (the only binary searching tree)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven N, how many structurally unique BST's (binary search trees) that store values 1...N?For example,Given n = 3, there is a total of 5 unique BST ' s. 1 3 3 2 1 \

"012-integer to Roman (number to Roman character)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven an integer, convert it to a Roman numeral.Input is guaranteed to being within the range from 1 to 3999.Main TopicEnter a number, turn it into a Roman numeral, enter the number between [1, 3999].Representat

"154-find Minimum in rotated Sorted Array II (find the smallest number in the rotated Array II)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionFollow to "Find Minimum in rotated Sorted Array":What if duplicates is allowed?Would this affect the run-time complexity? How and why?Suppose a sorted array is rotat

"147-insertion sort list (linked list insertion sort)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionSort a linked list using insertion sort.Main TopicInsert sort on a single-linked list tableThinking of solving problemsUse a pointer p to point to the first node of the unordered list, find the first node in

"078-subsets (subset)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a set of distinct integers, nums, return all possible subsets.Note:Elements in a subset must is in non-descending order.The solution set must not contain duplicate subsets.For example,If nums = [A/b], a solution is:[ [3], [1], [2]

"088-merge Sorted Array (merge sorted array)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven sorted integer Arrays nums1 and nums2, merge nums2 into nums1 as one sorted array.　　Note:Assume that nums1 have enough space (size that's greater or equal to M + N) to hold additional elements from NUMS2 . The

"089-gray Code (Gray code)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionThe gray code is a binary numeral system where the successive values are differ in only one bit.Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A Gray code sequence mu

"057-insert Interval (insertion interval)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).Assume that the intervals were initially sorted according to their start times.Example 1:Given intervals [1,3],[6,9

"058-length of last word (length of final word)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven A string s consists of Upper/lower-case alphabets and empty space characters ‘ ‘ , return the length of last word I n the string.If the last word does not exist, return 0.Note:a word is defined as A characte

054-spiral matrix (spiral matrix)"leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a matrix of M x n elements (m rows, n columns), return all elements of the matrix in spiral order.For example,Given the following matrix:123456789 ]]You should return [1,2,3,6,9,8,7,4,5] .Main TopicGiven a m*n matrix, ente

"056-merge intervals (interval merger)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a collection of intervals, merge all overlapping intervals.For example,Given [1,3],[2,6],[8,10],[15,18] ,Return [1,6],[8,10],[15,18] .Main TopicGiven a set of intervals, the overlapping intervals are merged.Thinking

"077-combinations (number of combinations)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven-integers n and K, return all possible combinations of k numbers out of 1 ... n.For example,If n = 4 and k = 2, a solution is:[ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4],]Main TopicGiven two numbers n and K,

"125-valid palindrome (back to text verification)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,　　"A man, a plan, a canal: Panama"is a palindrome.　　"race a car"is not a palindrome.　　Note