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edited Jun 17, 2020 at 9:04

#APL (24)

APL (24)

{(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A}

This is a function that takes a string and returns two values, the value and the base.

      {(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A} 'DEADBEEF'
3735928559 16

Explanation:

⎕D,⎕A: digits followed by letters
D←⍵⍳⍨: store in D the 1-based index of each character of ⍵ in the string of digits followed by letters
B←⌈/D: store in B the highest value in D. (which is the base to use)
(B⊥D-1): subtract 1 from each value in D (making them the values of the digits), and decode them as a base-B number.

#APL (24)

{(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A}

This is a function that takes a string and returns two values, the value and the base.

      {(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A} 'DEADBEEF'
3735928559 16

Explanation:

⎕D,⎕A: digits followed by letters
D←⍵⍳⍨: store in D the 1-based index of each character of ⍵ in the string of digits followed by letters
B←⌈/D: store in B the highest value in D. (which is the base to use)
(B⊥D-1): subtract 1 from each value in D (making them the values of the digits), and decode them as a base-B number.

{(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A}

This is a function that takes a string and returns two values, the value and the base.

      {(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A} 'DEADBEEF'
3735928559 16

Explanation:

⎕D,⎕A: digits followed by letters
D←⍵⍳⍨: store in D the 1-based index of each character of ⍵ in the string of digits followed by letters
B←⌈/D: store in B the highest value in D. (which is the base to use)
(B⊥D-1): subtract 1 from each value in D (making them the values of the digits), and decode them as a base-B number.

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created Apr 17, 2015 at 22:23

#APL (24)

{(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A}

This is a function that takes a string and returns two values, the value and the base.

      {(B⊥D-1),B←⌈/D←⍵⍳⍨⎕D,⎕A} 'DEADBEEF'
3735928559 16

Explanation:

⎕D,⎕A: digits followed by letters
D←⍵⍳⍨: store in D the 1-based index of each character of ⍵ in the string of digits followed by letters
B←⌈/D: store in B the highest value in D. (which is the base to use)
(B⊥D-1): subtract 1 from each value in D (making them the values of the digits), and decode them as a base-B number.