Mamane Bello

Results 4 issues of Mamane Bello

- 3Sum - Product of Array Except Self - Remove Node From End - Reverse LinkedList - Spiral Matrix - Squares of Sorted Array - 2Sum - I also added...

- The country Niger is missing. I will add it and create a PR

> I found it very interesting enhancing my TypeScript knowledge by keeping up to date and reading Shawn's blog! > I am really grateful!!!