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Given an array of ints, return true if every 2 that appears in the array is next to another 2. Otherwise, return false.

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Given a non-empty array, return true if there is a place to split the array so that the sum of the numbers on one side is equal to the...

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Consider the leftmost and righmost appearances of some value in an array. We'll say that the span is the number of elements between the...

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Return an array that contains exactly the same numbers as the given array but re-arranged so that every 3 is immediately followed by a 4....

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We'll say that a "mirror" section in an array is a group of contiguous elements such that somewhere in the array, the same group appears...

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Return an array that contains the exact same numbers as the given array, but rearranged so that all the even numbers come before all the...

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Given n >= 0, create an array with the pattern {1, 1, 2, 1, 2, 3, ... 1, 2, 3 .. n} (spaces added to show the grouping). Note that...

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Given a string of any length, return a new string where the last 2 chars, if present, are swapped, so "coding" yields "codign".

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Return true if somewhere in the array, there are three increasing adjacent numbers like .... 4, 5, 6, ... or 23, 24, 25.

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Given start and end integers, return a new array containing the sequence of integers from start up to but not including end, so start = 5...

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Return an array that is "left shifted" by one--so for an input of {6, 2, 5, 3}, the method returns {2, 5, 3, 6}. You may modify and...

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Given a non-empty array of ints, return a new array containing the elements from the original array that come after the last 4 in the...

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We'll say that an element in an array is "alone" if there are values before and after it, and those values are different from it. Return...

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Return an array that contains the exact same numbers as the given array, but rearranged so that all the zeros are grouped at the start of...

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Given two arrays of ints sorted in increasing order, called outer and inner, return true if all of the numbers in inner also appear in ...

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Given n >= 0, create an array of length n * n with the following pattern, shown here for n = 3 : {0, 0, 1, 0, 2, 1, 3, 2, 1} (spaces...