Find the Length of the Collatz Sequence
Given a positve integer n, find the length of its Collatz sequence. The Collatz sequence is generated sequentially where: n = n / 2 if n is even n …
Category: c / c++
Algorithm to Compute the Concatenation of Consecutive Binary Numbers
Given an integer n, return the decimal value of the binary string formed by concatenating the binary representations of 1 to n in order, modulo 10^9 + 7. Example …
Depth First Search Algorithm to Delete Even Leaves from Binary Tree
Given a binary tree root, repeatedly delete all leaves that have even values. That is, if after deletions, a node becomes a leaf with an even value, it too …
Using a Hash Table to Find A Number and Its Triple in a List
Given a list of integers nums, return whether there’s two numbers such that one is a triple of another. Constraints n ≤ 100,000 where n is the length of …
Algorithms to Check Narcissistic Number
Given an integer n, return whether it is equal to the sum of its own digits raised to the power of the number of digits. Example 1 Input n …