Convert decimal number to rational: Difference between revisions
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m (→{{header|AppleScript}}: Tidied, updated output.) |
m (→{{header|Phix}}: added syntax colouring, marked p2js compatible) |
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=={{header|Phix}}== |
=={{header|Phix}}== |
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<lang Phix> |
<!--<lang Phix>(phixonline)--> |
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span> |
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integer nom = 0 |
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<span style="color: #008080;">function</span> <span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> |
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integer denom = 1 |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">nom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> |
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if s[1..2]!="0." then ?9/0 end if |
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<span style="color: #000000;">denom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span> |
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for i=3 to length(s) do |
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<span style="color: #7060A8;">assert</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..</span><span style="color: #000000;">2</span><span style="color: #0000FF;">]=</span><span style="color: #008000;">"0."</span><span style="color: #0000FF;">)</span> |
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integer ch = s[i] |
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<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">3</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span> |
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if ch<'0' or ch>'9' then ?9/0 end if |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">ch</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> |
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nom = nom*10 + ch-'0' |
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<span style="color: #7060A8;">assert</span><span style="color: #0000FF;">(</span><span style="color: #000000;">ch</span><span style="color: #0000FF;">>=</span><span style="color: #008000;">'0'</span> <span style="color: #008080;">and</span> <span style="color: #000000;">ch</span><span style="color: #0000FF;"><=</span><span style="color: #008000;">'9'</span><span style="color: #0000FF;">)</span> |
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denom *= 10 |
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<span style="color: #000000;">nom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">nom</span><span style="color: #0000FF;">*</span><span style="color: #000000;">10</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">ch</span><span style="color: #0000FF;">-</span><span style="color: #008000;">'0'</span> |
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end for |
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<span style="color: #000000;">denom</span> <span style="color: #0000FF;">*=</span> <span style="color: #000000;">10</span> |
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return sq_div({nom,denom},gcd(nom,denom)) |
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span> |
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end function |
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<span style="color: #008080;">return</span> <span style="color: #7060A8;">sq_div</span><span style="color: #0000FF;">({</span><span style="color: #000000;">nom</span><span style="color: #0000FF;">,</span><span style="color: #000000;">denom</span><span style="color: #0000FF;">},</span><span style="color: #7060A8;">gcd</span><span style="color: #0000FF;">(</span><span style="color: #000000;">nom</span><span style="color: #0000FF;">,</span><span style="color: #000000;">denom</span><span style="color: #0000FF;">))</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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?decrat("0.9054054") |
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?decrat("0.518518") |
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<span style="color: #0000FF;">?</span><span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"0.9054054"</span><span style="color: #0000FF;">)</span> |
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?decrat("0.75")</lang> |
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<span style="color: #0000FF;">?</span><span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"0.518518"</span><span style="color: #0000FF;">)</span> |
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<span style="color: #0000FF;">?</span><span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"0.75"</span><span style="color: #0000FF;">)</span> |
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<!--</lang>--> |
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{{out}} |
{{out}} |
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<pre> |
<pre> |