Given the letter, the output will show the corresponding ASCII code.
Swap the first and last columns
Duplicate each element of a vector.
2倍してみよう - ここからスタート！
Back to basics - mean of corner elements of a matrix
Area of a circle
Vector with a repeated entry
If you have matrix A, create matrix B using matrix A as an "element"
Given the variable x as your input, multiply it by four, then divide it by two. Then put the result in y.
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