Iterated digits squaring: Difference between revisions

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{{FormulaeEntry|page=https://formulae.org/?script=examples/Iterated_digits_squaring}}
 
'''Solution'''
 
The following function returns the end value (either 1 or 89) of a given number:
 
[[File:Fōrmulæ - Iterated digits squaring 01.png]]
 
The following function calculates the number of 89 endings, from 1 to a given number:
 
[[File:Fōrmulæ - Iterated digits squaring 02.png]]
 
'''Test case'''
 
[[File:Fōrmulæ - Iterated digits squaring 03.png]]
 
[[File:Fōrmulæ - Iterated digits squaring 04.png]]
 
=={{header|Go}}==
Line 3,854 ⟶ 3,870:
=={{header|Wren}}==
{{trans|FreeBASIC}}
<syntaxhighlight lang="ecmascriptwren">var endsWith89 = Fn.new { |n|
var digit = 0
var sum = 0
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