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frew@mclean.com > sumRangeDecade
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Given an arraylist of numbers, return the sum of the ranges of the numbers in each decade.


sumRangeDecade([98, 99]) → 1
sumRangeDecade([98, 99, 31, 34]) → 4
sumRangeDecade([98, 99, 31, 34, 73]) → 4

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public int sumRangeDecade(ArrayList<Integer> nums) { }

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