Java Array Exercises: Sort a numeric array and a string array
Java Array: Exercise-1 with Solution
Write a Java program to sort a numeric array and a string array.
Pictorial Presentation:

Sample Solution:
Java Code:
import java.util.Arrays;
public class Exercise1 {
public static void main(String[] args){
int[] my_array1 = {
1789, 2035, 1899, 1456, 2013,
1458, 2458, 1254, 1472, 2365,
1456, 2165, 1457, 2456};
String[] my_array2 = {
"Java",
"Python",
"PHP",
"C#",
"C Programming",
"C++"
};
System.out.println("Original numeric array : "+Arrays.toString(my_array1));
Arrays.sort(my_array1);
System.out.println("Sorted numeric array : "+Arrays.toString(my_array1));
System.out.println("Original string array : "+Arrays.toString(my_array2));
Arrays.sort(my_array2);
System.out.println("Sorted string array : "+Arrays.toString(my_array2));
}
}
Sample Output:
Original numeric array : [1789, 2035, 1899, 1456, 2013, 1458, 2458, 1254, 1472, 2365, 1456, 2165, 1457, 2456] Sorted numeric array : [1254, 1456, 1456, 1457, 1458, 1472, 1789, 1899, 2013, 2035, 2165, 2365, 2456, 2458] Original string array : [Java, Python, PHP, C#, C Programming, C++] Sorted string array : [C Programming, C#, C++, Java, PHP, Python]
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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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