84 lines
1.7 KiB
Text
84 lines
1.7 KiB
Text
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{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 13,
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"id": "0f99fcb7-762f-447c-833d-f0e61b01cd3c",
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"metadata": {},
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"outputs": [],
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"source": [
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"fibs = 0 : 1 : zipWith (+) fibs (tail fibs)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "21cd7022-93ad-44e4-af07-695f2831ca47",
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"metadata": {},
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"source": [
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"it looks like the following"
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]
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},
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{
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"cell_type": "raw",
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"id": "202121f5-b7d3-4a23-b29b-d0ad679cc5d2",
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"metadata": {},
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"source": [
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"0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765"
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]
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},
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{
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"cell_type": "markdown",
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"id": "e49c7c8c-8f40-4429-91c7-6f8ffd6ec261",
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"metadata": {},
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"source": [
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"get first item of each iteration and then drop 3 items from the beginning"
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]
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},
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{
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"cell_type": "raw",
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"id": "b92a154b-99ad-4558-aeb1-635a4ad04570",
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"metadata": {},
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"source": [
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"0,2,8,34,144,610,2584"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 14,
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"id": "9265e55e-64e6-4aff-a541-5896a032f66b",
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"4613732"
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]
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},
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"metadata": {},
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"output_type": "display_data"
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}
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],
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"source": [
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"sum . takeWhile (<= 4000000) . map head . iterate (drop 3) $ fibs"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Haskell - haskell",
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"language": "haskell",
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"name": "ihaskell_haskell"
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},
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"language_info": {
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"codemirror_mode": "ihaskell",
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"file_extension": ".hs",
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"mimetype": "text/x-haskell",
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"name": "haskell",
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"pygments_lexer": "Haskell",
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"version": "9.0.2"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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