[JS] Double Rotary Lock

getMinCodeEntryTime.js

/**
 * @param {number} N
 * @param {number} M
 * @param {number[]} C
 */
function getMinCodeEntryTime(N, M, C) {
  function minDist(i, j) {
    const path1 = Math.abs(j - i);
    const bigger = Math.max(i, j);
    const smaller = Math.min(i, j);
    const path2 = N - bigger + smaller;
    return Math.min(path1, path2);
  }
  
  C.unshift(1); // C = [1,1,2,3] 
  const R = [minDist(1, C[1])];  // R = [2, 2, 2]  
  for(let i = 2; i <= M; i++) {  // i = 3 
    const Raux = []; // [2, 3]
    for(let k = 0; k < R.length ; k++) { // k = 1 (k < 2 ?)
      Raux[k] = R[k] + minDist(C[i], C[k]);
      R[k] += minDist(C[i], C[i - 1]);
    }
    R[R.length] = Math.min(...Raux);
  }
  return Math.min(...R);
}