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131 lines
3.0 KiB
Markdown
131 lines
3.0 KiB
Markdown
---
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id: 69a890af247de743333bd4d2
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title: "Challenge 229: Truncate the Text 2"
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challengeType: 29
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dashedName: challenge-229
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---
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# --description--
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Given a string, return a new string that is truncated so that the total width of the characters does not exceed 50 units.
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Each character has a specific width:
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| Letters | Width |
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| - | - |
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| `"ilI"` | 1 |
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| `"fjrt"` | 2 |
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| `"abcdeghkmnopqrstuvwxyzJL"` | 3 |
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| `"ABCDEFGHKMNOPQRSTUVWXYZ"` | 4 |
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The table above includes all upper and lower case letters. Additionally:
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- Spaces (`" "`) have a width of 2
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- Periods (`"."`) have a width of 1
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- If the given string is 50 units or less, return the string as-is, otherwise
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- Truncate the string and add three periods at the end (`"..."`) so its total width, including the three periods, is as close as possible to 50 units without going over.
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# --hints--
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`truncate_text("The quick brown fox")` should return `"The quick brown f..."`.
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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(truncate_text("The quick brown fox"), "The quick brown f...")`)
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}})
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```
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`truncate_text("The silky smooth sloth")` should return `"The silky smooth s..."`.
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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(truncate_text("The silky smooth sloth"), "The silky smooth s...")`)
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}})
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```
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`truncate_text("THE LOUD BRIGHT BIRD")` should return `"THE LOUD BRIG..."`.
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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(truncate_text("THE LOUD BRIGHT BIRD"), "THE LOUD BRIG...")`)
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}})
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```
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`truncate_text("The fast striped zebra")` should return `"The fast striped z..."`.
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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(truncate_text("The fast striped zebra"), "The fast striped z...")`)
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}})
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```
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`truncate_text("The big black bear")` should return `"The big black bear"`.
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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(truncate_text("The big black bear"), "The big black bear")`)
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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 truncate_text(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 truncate_text(s):
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MAX_WIDTH = 50
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ELLIPSIS = "..."
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ELLIPSIS_WIDTH = 3
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TRUNCATE_LIMIT = MAX_WIDTH - ELLIPSIS_WIDTH
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char_groups = {
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"ilI.": 1,
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"fjrt ": 2,
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"abcdeghkmnopqrstuvwxyzJL": 3,
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"ABCDEFGHKMNOPQRSTUVWXYZ": 4
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}
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def get_char_width(char):
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for key, width in char_groups.items():
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if char in key:
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return width
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return 3
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def string_width(string):
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total = 0
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for char in string:
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total += get_char_width(char)
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return total
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if string_width(s) <= MAX_WIDTH:
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return s
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result = ""
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total_width = 0
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for char in s:
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char_width = get_char_width(char)
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if total_width + char_width > TRUNCATE_LIMIT:
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break
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result += char
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total_width += char_width
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return result + ELLIPSIS
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```
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