12 lines
439 B
JavaScript
12 lines
439 B
JavaScript
function isPangram(s) {
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var letters = "zqxjkvbpygfwmucldrhsnioate"
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// sorted by frequency ascending (http://en.wikipedia.org/wiki/Letter_frequency)
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s = s.toLowerCase().replace(/[^a-z]/g,'')
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for (var i = 0; i < 26; i++)
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if (s.indexOf(letters[i]) < 0) return false
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return true
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}
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console.log(isPangram("is this a pangram")) // false
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console.log(isPangram("The quick brown fox jumps over the lazy dog")) // true
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