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Java Exercises: Create a new string taking first and last characters from two given strings

Java Basic: Exercise-73 with Solution

Write a Java program to create a new string taking first and last characters from two given strings. If the length of either string is 0 use "#" for missing character.

Pictorial Presentation:

Java Basic Exercises: Create a new string taking first and last characters from two given strings

Sample Solution:

Java Code:

import java.lang.*;
 public class Exercise73 {
 public static void main(String[] args)
 {
    String str1 = "Python"; 
	String str2 = ""; 
	
	int length2 = str2.length();
	String result = "";
	result += (str1.length() >= 1) ? str1.charAt(0) : '#';
	result += (length2 >= 1) ? str2.charAt(length2-1) : '#';
	System.out.println(result);
 }
}

Sample Output:

P#

Flowchart:

Flowchart: Java exercises: Create a new string taking first and last characters from two given strings

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