We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
Loading...
  1. Practice
  2. Data Structures
  3. Arrays
  4. 2D Array - DS
  5. Discussions

2D Array - DS

  • vasilij_kolomie1 + 0 comments

    my approch has -1 calculation on each glass and no additional array sum. Look on it. . '''

    def hourglassSum(arr):
    len_arr = len(arr)
    n=(len_arr-2)**2
    s_max = None
    for k in range(n):
    i = k//(len_arr-2)
    j = k%(len_arr-2)
    if j==0: # new row glass sum
    _ = sum((arr[i][0],arr[i][1],arr[i][2],
    arr[i+1][1],
    arr[i+2][0],arr[i+2][1],arr[i+2][2])
    if(s_max is None):
    s_max = _
    else: # next glass in the same row sum calc
    _ += (-arr[i][j-1]-arr[i+1][j]-arr[i+2][j-1] + \
    arr[i][j+2]+arr[i+1][j+1]+arr[i+2][j+2])
    s_max = max(s_max,_)
    return s_max
    '''