xMass Chaos

const input1 = [1, 2, 5, 3, 4, 7, 8, 6];
const input2 = [2, 5, 1, 3, 4];

const chaos = (arr) => {
  let operationCount = 0;
  let isChaos = false;

  arr.forEach((_, idx) => {
    const nextReversedIdx = arr.length - idx;
    const currentReversedIndex = nextReversedIdx - 1;

    const currentValue = arr[currentReversedIndex];
    const nextValue = arr[nextReversedIdx];

    if (currentValue > nextValue) {
      const tempArr = arr.slice(nextReversedIdx, arr.length);

      tempArr.forEach((__, innerIdx) => {
        if (
          currentValue > tempArr[innerIdx] &&
          currentValue > tempArr[innerIdx + 1] &&
          currentValue > tempArr[innerIdx + 2]
        ) {
          !isChaos && console.log("Too chaotic");
          isChaos = true;
        }

        if (currentValue > tempArr[innerIdx]) {
          operationCount++;

          const value = arr.splice(currentReversedIndex + innerIdx, 1);
          arr.splice(nextReversedIdx + innerIdx, 0, ...value);
        }
      });
    }
  });

  !isChaos && console.log(operationCount);
};

chaos(input1);
chaos(input2);