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Learn how to calculate the clumsy factorial of a positive integer using a fixed rotation of operations with multiply, divide, add and subtract. See examples, constraints and test cases for this medium level problem on LeetCode.
For example, factorial(10) = 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1. We instead make a clumsy factorial: using the integers in decreasing order, we swap out the multiply operations for a fixed rotation of operations: multiply (*), divide (/), add (+) and subtract (-) in this order.
29 cze 2015 · For n!, where n=10, we know that 1*10=10, we also know that the next pairing will result in 10+8, or 18... the next paring will result in a product of 18+6=24, followed by 24+4=28, and finally by 28+2=30. Without having to calculate each product, we can quickly predict what they will be.
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Find solutions to LeetCode problems in C++, Java, and Python with good readability and consistent style. Learn about coding standards, formatter, and leetcode study guide for FAANG and beginners.
23 sty 2019 · During my efforts to solve leetcode 70, climbing stairs, I thought of an answer that uses factorials (how many different ways to form a line with identical elements). Later, I thought that the question could also be solved using fibonacci, and the first few answers appear to be the same.
