max.js

// ALGORITHME

const max2 = (a, b) => (a > b ? a : b);

// Version iterative

const max_iter = function (T) {
	if (!T.length)
		throw "Can't use max() an empty array";
	let m = T[0];
	for (let i = 1; i < T.length; i++)
		m = max2(m, T[1]);
	return m;
}

// Version recursive

const max_rec = function (T) {
	if (!T.length)
		throw "Can't use max() an empty array";
	if (T.length == 1)
		return T[0];
	return max2(T[0], max_rec(T.slice(1, T.length)));
}

// TESTS

console.log(max_rec([2, 5]));
console.log(max_rec([-2, -5, -10]));
// Déroulé des appels recurisf de la fonction max_rec() ;  max2 = (a, b) => (a > b : a ? b)
// max_rec([-2, -5, -10])
// max2(-2, max_rec([-5, -10]))
// max2(-2, max2(-5, max_rec([-10])))
// max2(-2, max2(-5, -10))
// max2(-2, -5)
// -2
console.log(max_rec([2.1]));
console.log(max_rec(["bar", "foo"]));
console.log(max_rec([]));