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Java method to determine whether a specific value is in an array

Release: 2019-11-26 10:00:18
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Java method to determine whether a specific value is in an array

Java method to determine whether a specific value is in an array:

Use List:

public static boolean useList(String[] arr, String targetValue) {
        return Arrays.asList(arr).contains(targetValue);
    }
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Use Set:

 public static boolean useSet(String[] arr, String targetValue) {
        Set<String> set = new HashSet<String>(Arrays.asList(arr));
        return set.contains(targetValue);
    }
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Use Simple loop statement:

public static boolean useLoop(String[] arr, String targetValue) {
        for (String s : arr) {
            if (s.equals(targetValue))
                return true;
        }
        return false;
    }
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