Read n characters given read4 ii call multiple times. What if the citations array is sorted in ascending order. Given the array is sorted, we should use binary search. Read n characters given read4 ii call multiple times lru cache lfu cache word search ii basic calculator. Given an array of citations sorted in ascending order each citation is a nonnegative integer of a researcher, write a function to compute the researchers. You must distribute the continuous id books to one people to copy. You are given an integer array nums and you have to return a new counts array. Level up your coding skills and quickly land a job. You have a number of envelopes with widths and heights given as a pair of integers w, h.
The counts array has the property where countsi is the number of smaller elements to the right of numsi. You are given two jugs with capacities x and y litres. Given an array of citations each citation is a nonnegative integer of a researcher, write a function to compute the. Introduction merge k sorted lists 1 two sum 2 add two numbers 3 longest substring without repeating characters. According to the definition of hindex on wikipedia. Given an array of citations each citation is a nonnegative integer of a researcher, write a function to compute the researchers hindex. Elements of programming is a lot more comprehensive than cracking coding interview.
Integers in each row are sorted in ascending from left to right. Given an array of citations sorted in ascending order each citation is a nonnegative integer of a researcher, write a function to compute the researchers hindex. One envelope can fit into another if and only if both the width and height of one envelope is greater than the width and height of the other envelope. Given an array of citations sorted in ascending order each citation is a non negative integer of a researcher, write a function to compute the researchers. Leetcode hindex java leetcode search a 2d matrix java. Integers in each column are sorted in ascending from top to bottom. Boundary includes left boundary, leaves, and right boundary in order without duplicate nodes. Serialize and deserialize binary tree facebook interview. Given an array of integers, every element appears three times except for one. Nov 28, 2016 i have read and worked through both books. You need to determine whether it is possible to measure exactly z litres using these two jugs.
Count of smaller numbers after self algorithms collection. Write an efficient algorithm that searches for a value in an m x n matrix. Given an array of citations each citation is a nonnegative integer of a researcher. Given an integer array nums, return the number of range sums that lie in lower, upper inclusive. I think its enough to consider lc as the best platform for preparation to tech interviews. I use ep to practice, and cci for a quick interview prep. Given an array of integers, every element appears three. Leetcode hindex java given an array of citations each citation is a nonnegative integer of a researcher, write a function to compute the researchers hindex.
Want to be notified of new releases in gzwlleetcode. Leetcode kth smallest element in a sorted matrix java category algorithms if you want someone to read your code, please put the code inside and tags. Given nums 5, 2, 6, 1 to the right of 5 there are 2 smaller elements 2 and 1. Explore is a wellorganized tool that helps you get the most out of leetcode by providing structure to guide your progress towards the next step in your programming career. This is the best place to expand your knowledge and get prepared for your next interview. This suggests that if citationsmiddle nmiddle h where n is the number of elements in citations, then we have at least h elements are at least h, and other middle n h elements are at most h. Sep 20, 2016 for example, given citations 3, 0, 6, 1, 5, which means the researcher has 5 papers in total and each of them had received 3, 0, 6, 1, 5 citations respectively since the researcher has 3 papers with at least 3 citations each and the remaining two with no more than 3 citations each, his h index is. A scientist has index h if h of hisher n papers have at least h citations each, and the other n. Suppose there is another h h and h is also an h index. Given an array of citations sorted in ascending order each citation is a nonnegative integer of a researcher, write a function to compute the researchers hindex according to the definition of hindex on wikipedia. Hindex given an array of citations each citation is a nonnegative integer of a researcher, write a function to compute the researchers hindex. Introduction 388 longest absolute file path 308 range sum query 2d mutable. If there are less than k characters left, reverse all of them.
Boundary of binary tree medium given a binary tree, return the values of its boundary in anticlockwise direction starting from root. Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or transmitted across a network connection link to be reconstructed later in the same or another computer environment. Since the researcher has 3 papers with at least 3 citations each and the remaining two with no more than 3 citations each, her hindex is 3. Return true because leetcode can be segmented as leet code.
Count primes leetcode 204 rectangle area leetcode 223 others. Reverse string ii easy given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. This project aims at solving leetcode algorithm problems with pure c language using as little library functions as i can, which means except memory management functions and few string functions i will implement everything i need such as trees, stacks, queues and hash tables. Given an array a of integer with size of n means n books and number of pages of each book and k people to copy the book. Word break given a string s and a dictionary of words dict, determine if s can be segmented into a spaceseparated sequence of one or more dictionary words. Leetcode the worlds leading online programming learning. Leetcode is the best platform to help you enhance your skills, expand your knowledge and prepare for technical interviews. If nothing happens, download github desktop and try again. Left boundary is defined as the path from root to the leftmost node. You can give book a1,a2 to one people, but you cannot give book a1, a3 to one people, because book a1 and a3 is not continuous.
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