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Data update

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Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
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16
Task/Cumulative-standard-deviation/Emacs-Lisp/cumulative-standard-deviation-1.l
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(defun running-std (items)
(let ((running-sum 0)
(running-len 0)
(running-squared-sum 0)
(result 0))
(dolist (item items)
(setq running-sum (+ running-sum item))
(setq running-len (1+ running-len))
(setq running-squared-sum (+ running-squared-sum (* item item)))
(setq result (sqrt (- (/ running-squared-sum (float running-len))
(/ (* running-sum running-sum)
(float (* running-len running-len))))))
(message "%f" result))
result))
(running-std '(2 4 4 4 5 5 7 9))

2
Task/Cumulative-standard-deviation/Emacs-Lisp/cumulative-standard-deviation-2.l
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(let ((x '(2 4 4 4 5 5 7 9)))
(string-to-number (calc-eval "sqrt(vpvar($1))" nil (append '(vec) x))))

24
Task/Cumulative-standard-deviation/Emacs-Lisp/cumulative-standard-deviation-3.l
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;; lexical-binding: t
(require 'generator)
(iter-defun std-dev-gen (lst)
(let ((sum 0)
(avg 0)
(tmp '())
(std 0))
(dolist (i lst)
(setq i (float i))
(push i tmp)
(setq sum (+ sum i))
(setq avg (/ sum (length tmp)))
(setq std 0)
(dolist (j tmp)
(setq std (+ std (expt (- j avg) 2))))
(setq std (/ std (length tmp)))
(setq std (sqrt std))
(iter-yield std))))
(let* ((test-data '(2 4 4 4 5 5 7 9))
(generator (std-dev-gen test-data)))
(dolist (i test-data)
(message "with %d: %f" i (iter-next generator))))