881. Boats to Save People

/**
 * @param {number[]} people
 * @param {number} limit
 * @return {number}
 */
var numRescueBoats = function (people, limit) {
	let boatCount = 0,
		i = 0,
		j = people.length - 1
	people.sort((a, b) => a - b)
	while (i <= j) {
		const curr = people[i] + people[j]
		boatCount++
		if (curr <= limit) {
			i++
		}
		j--
	}
	return boatCount
}

//Test cases
console.log(numRescueBoats([1, 2], 3))
console.log(numRescueBoats([3, 2, 2, 1], 3))
console.log(numRescueBoats([], 3))
console.log(numRescueBoats([3, 5, 3, 4], 5))
console.log(numRescueBoats([3, 5, 3, 4], 0))