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Count trailing truths

Inspired by, and in memory of, my dear friend and colleague,

Dan Baronet

Dan Baronet, 1956 – 2016. R.I.P.

He found the shortest possible APL solution to this task:

Task

Given a Boolean list, count the number of trailing truth values.

Example cases

{} → 0

{0} → 0

{1} → 1

{0, 1, 1, 0, 0} → 0

{1, 1, 1, 0, 1} → 1

{1, 1, 0, 1, 1} → 2

{0, 0, 1, 1, 1} → 3

{1, 1, 1, 1, 1, 1} → 6

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\$\begingroup\$ -4 Bytes for using $_GET \$\endgroup\$

Jörg Hülsermann
– Jörg Hülsermann

2017年05月03日 13:32:11 +00:00
Commented May 3, 2017 at 13:32
\$\begingroup\$ @JörgHülsermann That would have empty output for any list full of 1s. \$\endgroup\$

Titus
– Titus

2017年05月03日 14:50:51 +00:00
Commented May 3, 2017 at 14:50
\$\begingroup\$ Okay now I have realize it \$\endgroup\$

Jörg Hülsermann
– Jörg Hülsermann

2017年05月03日 16:48:50 +00:00
Commented May 3, 2017 at 16:48

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