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@ -4,7 +4,7 @@ importance: 5
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# Check for spam
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Write a function `checkSpam(str)` that returns `true` if `str` contains 'viagra' or 'XXX', otherwise false.
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Write a function `checkSpam(str)` that returns `true` if `str` contains 'viagra' or 'XXX', otherwise `false`.
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The function must be case-insensitive:
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@ -16,7 +16,7 @@ The array in the process:
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```js no-beautify
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Jazz, Blues
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Jazz, Bues, Rock-n-Roll
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Jazz, Blues, Rock-n-Roll
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Jazz, Classics, Rock-n-Roll
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Classics, Rock-n-Roll
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Rap, Reggae, Classics, Rock-n-Roll
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@ -453,7 +453,7 @@ We can use an array as a deque with the following operations:
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- `push(...items)` adds `items` to the end.
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- `pop()` removes the element from the end and returns it.
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- `shift()` removes the element from the beginning and returns it.
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- `unshift(...items)` adds items to the beginning.
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- `unshift(...items)` adds `items` to the beginning.
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To loop over the elements of the array:
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- `for (let i=0; i<arr.length; i++)` -- works fastest, old-browser-compatible.
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