What is the element that appears the most?
Q: What is the most abundant element on Earth? A: Oxygen, which makes up about 49.5% of the total mass of the Earth’s crust, waters, and atmosphere, according to the textbook “Modern Chemistry.” Silicon ranks second with 28%. Aluminum is a distant third, at just 8%.
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What is type K superior?
The top K element pattern is a technique that aims to return a given number of the most frequent/largest/smallest elements in a given set. The key data structure for solving the main K-element problems is the heap.
What is the time complexity of the priority queue?
Creating a heap takes O(n) time, while inserting into a heap (or priority queue) takes O(log(n)) time.
What are the 5 most common elements?
1.) Hydrogen. Created during the hot Big Bang but depleted by stellar fusion, ~70% of the Universe is still hydrogen.
Which gas is highest in the universe?
Hydrogen
Hydrogen, the most abundant in the universe, is the chemical element with atomic number 1 and an atomic mass of 1.00794 amu, the lightest of all known elements. It exists as a diatomic gas (H2). Hydrogen is the most abundant gas in the universe.
What is the top K problem?
The Top-K problem is related to the problem of determining the order statistics for a collection of numbers. A well-known linear-time algorithm for computing the ith-order statistic of a list of numbers is presented in Blum et al. (1973) and Floyd and Rivest (1973).
How to find the most frequent K elements?
K Most Frequent Elements Given a non-empty array of integers, returns the k most frequent elements. You can assume that k is always valid, 1 ≤ k ≤ number of unique elements. The time complexity of your algorithm must be better than O( n log n ), where n is the size of the array. Please log in to view your shipments.
How to find the top k in an array?
Insert element at position k+1 of array, update frequency of that element in HashMap. For each item compare the frequency and swap if the higher frequency item is stored next to it, if the frequency is the same then the swap is the next item that is higher. print the top k element in each traversal of the original array.
How to find the top K numbers in a sequence?
Its task is to read numbers from the array and keep at most K numbers on top (according to their decreasing frequency) each time a new number is read. Basically, we need to print the k main numbers ordered by frequency when the input stream has included k distinct elements, otherwise we need to print all distinct elements ordered by frequency.
How to keep track of top K numbers?
To keep track of the top k elements, create a top vector of size k+1. For each element in the stream, increase its frequency and store it at the last position of the top vector. We can use hashing to efficiently get the frequency of an element and increase it. Now find the position of the element in the top vector and iterate from that position to zero.