Sum multiples of 3 and 5: Difference between revisions
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<pre>233168</pre> |
<pre>233168</pre> |
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=={{header|BQN}}== |
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A naive solution: |
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<lang bqn>Sum ← +´·(0=3⊸|⌊5⊸|)⊸/↕</lang> |
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A much faster solution: |
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<lang bqn>Sum ← { |
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m ← (0=3⊸|⌊5⊸|)↕15 ⋄ h‿l ← 15(⌊∘÷˜∾|)𝕩 |
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(+´l↑m×15(×+↕∘⊣)h) + (15×(+´m)×2÷˜h×h-1) + h×+´m×↕15 |
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}</lang> |
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<pre> |
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Sum 1000 |
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233168 |
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</pre> |
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([https://mlochbaum.github.io/BQN/try.html#code=U3VtIOKGkCB7CiAgbSDihpAgKDA9M+KKuHzijIo14oq4fCnihpUxNSDii4QgaOKAv2wg4oaQIDE1KOKMiuKImMO3y5ziiL58KfCdlakKICAoK8K0bOKGkW3DlzE1KMOXK+KGleKImOKKoyloKSArICgxNcOXKCvCtG0pw5cyw7fLnGjDl2gtMSkgKyBow5crwrRtw5fihpUxNQp9CgpTdW0gMTAwMAo= online REPL]) |
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=={{header|C}}== |
=={{header|C}}== |
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