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Task 1: "Array of Product
You are given an array of positive integers @N.
Write a script to return an array @M where $M[i] is the product of all elements of @N except the index $N[i].
Example 1:
Input:
@N = (5, 2, 1, 4, 3)
Output:
@M = (24, 60, 120, 30, 40)
$M[0] = 2 x 1 x 4 x 3 = 24
$M[1] = 5 x 1 x 4 x 3 = 60
$M[2] = 5 x 2 x 4 x 3 = 120
$M[3] = 5 x 2 x 1 x 3 = 30
$M[4] = 5 x 2 x 1 x 4 = 40
Example 2:
Input:
@N = (2, 1, 4, 3)
Output:
@M = (12, 24, 6, 8)
$M[0] = 1 x 4 x 3 = 12
$M[1] = 2 x 4 x 3 = 24
$M[2] = 2 x 1 x 3 = 6
$M[3] = 2 x 1 x 4 = 8
"
My notes: clearly defined. So M[i] is product(all elements)/M[i]
Hang on! unless M[i]==0 in which it's product(all other elements)
Task 2: "Spiral Matrix
You are given m x n matrix of positive integers.
Write a script to print a spiral path throught the matrix as list.
Example 1:
Input:
[ 1, 2, 3 ]
[ 4, 5, 6 ]
[ 7, 8, 9 ]
Ouput:
[ 1, 2, 3, 6, 9, 8, 7, 4, 5 ]
Example 2:
Input:
[ 1, 2, 3, 4 ]
[ 5, 6, 7, 8 ]
[ 9, 10, 11, 12 ]
[ 13, 14, 15, 16 ]
Output:
[ 1, 2, 3, 4, 8, 12, 16, 15, 14, 13, 9, 5, 6, 7, 11, 10 ]
"
My notes: clearly defined. Is "a spiral path" clear? Think so.
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