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style: enable AvoidStarImport
in checkstyle (#5141)
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@ -1,6 +1,9 @@
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package com.thealgorithms.backtracking;
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import java.util.*;
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import java.util.Arrays;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.TreeSet;
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/**
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* Finds all permutations of given array
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