bluesockets

function numberOfPaths (matrix) {
  // Write your code here
  if (matrix.length < 1) return 0

  // if matrix[matrix.length-1] === 0 and matrix[matrix.length -1] == 0 then return 0
  // set up 2d cache to cumulate the possible moves
  const cache = Array.from(Array(matrix.length + 1), () => new Array(matrix[0].length + 1).fill(null))
  // set up initial values

  cache[1][1] = 1