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abraskin@mbusd.org 2016_practice_set_5 > firstOccursAtIndex
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Return the INDEX of the first occurrence of a value within an array. If the value is not stored in the array then return -1.


firstOccursAtIndex(["hello", "I", "must", "be", "going"], "where") → -1
firstOccursAtIndex(["hello", "I", "must", "be", "going"], "going") → 4
firstOccursAtIndex(["hello", "hello", "I", "must", "be", "going"], "hello") → 0

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int firstOccursAtIndex(String[] strings, String matchString) { }

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