Please try to solve a harder version "Problem 44448. Project Euler: Problem 14 Longest Collatz sequence"
Test if a Number is a Palindrome without using any String Operations
Add two numbers
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
MATLAB Basic: rounding II
Two functions (to be sure)
Mysterious digits operation (easy)
I want to know everything!
Rank of magic square (for beginners)
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