Function isSequentialDesc

src/analyze.ts:13–20

(code: string)

}

function isSequentialDesc(code: string): boolean {
	for (let i = 1; i < code.length; i++) {
		const prev = Number(code[i - 1])
		const curr = Number(code[i])
		if (curr !== (prev + 9) % 10) return false
	}
	return true
}

function countGroups(code: string): number {
	let groups = 1