Java Exercises: Reverse the content of a sentence without reverse every word
Java Basic: Exercise-169 with Solution
Write a Java program to reverse the content of a sentence (assume a single space between two words) without reverse every word.
Pictorial Presentation:

Sample Solution:
Java Code:
import java.util.*;
public class Solution {
public static String reverse_str_word(String input_sentence) {
if (input_sentence == null) {
throw new IllegalArgumentException("Input param can't be null.");
}
StringBuilder stringBuilder = new StringBuilder();
String[] words = input_sentence.split(" ");
for (int i = words.length - 1; i >= 0; i--) {
stringBuilder.append(words[i]);
if (i != 0) {
stringBuilder.append(" ");
}
}
return stringBuilder.toString();
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Input a string: ");
String input = scanner.nextLine();
System.out.println("\nResult: " + reverse_str_word(input));
}
}
Sample Output:
Input a string: The quick brown fox jumps over the lazy dog Result: dog lazy the over jumps fox brown quick The
Flowchart:

Java Code Editor:
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Previous: Write a Java program to multiply two given integers without using the multiply operator(*).
Next: Write a Java program to find the length of the longest consecutive sequence of a given array of integers.
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Java: Tips of the Day
Java: Anagrams
Generates all anagrams of a string.
public static List<String> anagrams(String input) { if (input.length() <= 2) { return input.length() == 2 ? Arrays.asList(input, input.substring(1) + input.substring(0, 1)) : Collections.singletonList(input); } return IntStream.range(0, input.length()) .mapToObj(i -> new SimpleEntry<>(i, input.substring(i, i + 1))) .flatMap(entry -> anagrams(input.substring(0, entry.getKey()) + input.substring(entry.getKey() + 1)) .stream() .map(s -> entry.getValue() + s)) .collect(Collectors.toList()); }
Ref: https://bit.ly/3rvAdAK
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