Roger's Code Journey

Link to code challenge function countingValleys(n, s) { let level = [0]; let count = 0; for (let step of s) { if (step === "U") { level.push(level[level.length - 1] + 1); if (level[level.length - 2]

Link to code challenge function sockMerchant(n, ar) { let pairs = 0; let sum = 1; let arr = ar.sort(); for (let i = 1; i 1) pairs += Math.floor(sum / 2); sum = 1; } } return pairs; }