Function coinChange

javascript/0322-coin-change.js:9–17

(coins, amount, coin = 0)

 * @return {number}
 */
var coinChange = (coins, amount, coin = 0) => {
    const isBaseCase1 = amount === 0;
    if (isBaseCase1) return 0;

    const isBaseCase2 = !(coin < coins.length && 0 < amount);
    if (isBaseCase2) return -1;

    return dfs(coins, amount, coin); /* Time O(S^N) | Space O(N) */
};

var dfs = (coins, amount, coin) => {
    let [max, minCost] = [amount / coins[coin], Infinity];