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Warmup-2 > has271
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Given an array of ints, return true if it contains a 2, 7, 1 pattern -- a value, followed by the value plus 5, followed by the value minus 1. Additionally the 271 counts even if the "1" differs by 2 or less from the correct value.

has271([1, 2, 7, 1]) → true
has271([1, 2, 8, 1]) → false
has271([2, 7, 1]) → true

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public boolean has271(int[] nums) { }


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