Snail

snail-reverse-function.js

const reverse = array => [...array].reverse();
const compose = (a, b) => x => a(b(x));

const flipMatrix = matrix => (
  matrix[0].map((column, index) => (
    matrix.map(row => row[index])
  ))
);

const rotateMatrix = compose(flipMatrix, reverse);
const flipMatrixCounterClockwise = compose(reverse, rotateMatrix);
const rotateMatrixCounterClockwise = compose(reverse, flipMatrix);