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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:

Java Array Exercises: Sort a numeric array and a string array

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]

Flowchart:

Flowchart: Java Array Exercises: Sort a numeric array and a string array

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Java Code Editor:

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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