Java Array Exercises: Find the duplicate values of an array of string values
Java Array: Exercise-13 with Solution
Write a Java program to find the duplicate values of an array of string values.
Pictorial Presentation:

Sample Solution:
Java Code:
public class Exercise13 {
public static void main(String[] args)
{
String[] my_array = {"bcd", "abd", "jude", "bcd", "oiu", "gzw", "oiu"};
for (int i = 0; i < my_array.length-1; i++)
{
for (int j = i+1; j < my_array.length; j++)
{
if( (my_array[i].equals(my_array[j])) && (i != j) )
{
System.out.println("Duplicate Element is : "+my_array[j]);
}
}
}
}
}
Sample Output:
Duplicate Element is : bcd Duplicate Element is : oiu
Flowchart:

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Java: Tips of the Day
countOccurrences
Counts the occurrences of a value in an array.
Use Arrays.stream().filter().count() to count total number of values that equals the specified value.
public static long countOccurrences(int[] numbers, int value) { return Arrays.stream(numbers) .filter(number -> number == value) .count(); }
Ref: https://bit.ly/3kCAgLb
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