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Update How To Count Things.ipynb

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Peter Norvig
2025-12-08 12:53:52 -08:00
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parent b3bef60833
commit b103599c44
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ipynb/How To Count Things.ipynb
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@@ -81,7 +81,7 @@
"\n",
"![barcode](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/EAN-13-5901234123457.svg/250px-EAN-13-5901234123457.svg.png)\n",
"\n",
"We'll represent a unit as a character, `'B'` or `'W'`, and a barcode as a string of *n* units. The barcode above would start with `'BWWBW...'`. A valid string is one without 4 of the same character/unit in a row; `valid_barcode` tests for this.\n",
"We'll represent a unit as a character, `'B'` or `'W'`, and a barcode as a string of *n* units. The barcode above would start with `'BWBWW...'`. A valid string is one without 4 of the same character/unit in a row; `valid_barcode` tests for this.\n",
"\n",
"We'll start with the **enumerate and test** strategy: generate `all_strings` of *n* units and count how many are valid with `enumerate_barcodes`:"
]