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14
Task
Java Collections,
level 4,
lesson 2
Locked
Fibonacci numbers using recursion
Read about Fibonacci numbers.
Implement a recursive fibonacci method, where n is the number of an element in the Fibonacci sequence.
Don't create additional fields in the Solution class.
8
Task
Java Collections,
level 4,
lesson 2
Locked
Factorials using recursion
Read about how to calculate factorials.
Implement a recursive factorial method, where n is the number whose factorial needs to be calculated.
Don't create additional fields in the Solution class.
14
Task
Java Collections,
level 4,
lesson 2
Locked
Factorization using recursion
Separate the whole number n, where n > 1, into its prime factors.
Display all of its factors in ascending order, separated by spaces.
Write a recursive method to calculate the prime factors.
Don't create additional fields in the Solution class.
14
Task
Java Collections,
level 4,
lesson 2
Locked
Recursion for mathematical expressions
The input is a mathematical expression in the form of a String.
The expression may include whole numbers, fractional numbers, parentheses (), spaces, negative signs -, exponents ^, sin(x), cos(x), and tan(x).
14
Task
Java Collections,
level 4,
lesson 2
Locked
Tower of Hanoi
There are three rods. There are numRings rings stacked on rod A. Each ring has a different size and they're stacked from smallest
to largest (largest on the bottom). You need to move the pyramid of numRings rings from rod A to rod B in as few moves as possible.
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