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85 lines
1.9 KiB
Markdown
85 lines
1.9 KiB
Markdown
---
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id: 698a1a73ade5ac0e19180fa7
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title: "Challenge 204: Sum the Letters"
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challengeType: 29
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dashedName: challenge-204
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---
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# --description--
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Given a string, return the sum of its letters.
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- Letters are A-Z in uppercase or lowercase
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- Letter values are: `"A"` = 1, `"B"` = 2, ..., `"Z"` = 26
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- Uppercase and lowercase letters have the same value.
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- Ignore all non-letter characters.
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# --hints--
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`sum_letters("Hello")` should return `52`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sum_letters("Hello"), 52)`)
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}})
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```
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`sum_letters("freeCodeCamp")` should return `94`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sum_letters("freeCodeCamp"), 94)`)
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}})
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```
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`sum_letters("The quick brown fox jumps over the lazy dog.")` should return `473`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sum_letters("The quick brown fox jumps over the lazy dog."), 473)`)
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}})
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```
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`sum_letters("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean ex nisl, pretium eu varius blandit, facilisis quis eros. Vestibulum ante ipsum primis in faucibus orci.")` should return `1681`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sum_letters("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean ex nisl, pretium eu varius blandit, facilisis quis eros. Vestibulum ante ipsum primis in faucibus orci."), 1681)`)
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}})
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```
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`sum_letters("</404>")` should return `0`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sum_letters("</404>"), 0)`)
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}})
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```
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# --seed--
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## --seed-contents--
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```py
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def sum_letters(s):
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return s
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```
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# --solutions--
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```py
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def sum_letters(s):
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total = 0
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for char in s:
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upper = char.upper()
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if 'A' <= upper <= 'Z':
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total += ord(upper) - ord('A') + 1
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return total
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```
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