Detect Pattern of Length M Repeated K or More Times

export function containsPattern(arr: number[], m: number, k: number): boolean {
  const n = arr.length;
 
  let patterns = 0;
  for (let i = 0; i < n - m; i++) {
    patterns = arr[i] === arr[i + m] ? patterns + 1 : 0;
    if (patterns >= m * (k - 1)) {
      return true;
    }
  }
  return false;
}