Determine if a string has all the same characters: Difference between revisions
Determine if a string has all the same characters (view source)
Revision as of 17:55, 11 May 2023
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=={{header|J}}==
In J, <code>#~.y</code> gives a count of the unique items (characters) in y.
Here's a relatively concise (and grammatical) approach. For grammatical reasons we report the count of characters up through the differing character position, rather than its index:
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