Java programming Exercises: Move all lower case letters to the front, keeping the order of all the letters of a given word
Java Regular Expression: Exercise-23 with Solution
Write a Java program to move all lower case letters to the front of a given word keeping the relative position all the letters(both upper and lower case) same.
Sample Solution-1:
Java Code:
public class test {
public static void main(String[] args) {
String text = "Java";
System.out.println("Original String: "+text);
System.out.println("Move all lower case letters to the front of the said word: "+validate(text));
text = "JavaScript";
System.out.println("\nOriginal String: "+text);
System.out.println("Move all lower case letters to the front of the said word: "+validate(text));
text = "SQLite";
System.out.println("\nOriginal String: "+text);
System.out.println("Move all lower case letters to the front of the said word: "+validate(text));
}
public static String validate(String text) {
return text.replaceAll("[A-Z]", "") + text.replaceAll("[a-z]", "");
}
}
Sample Output:
Original String: Java Move all lower case letters to the front of the said word: avaJ Original String: JavaScript Move all lower case letters to the front of the said word: avacriptJS Original String: SQLite Move all lower case letters to the front of the said word: iteSQL
Pictorial Presentation:
Flowchart :
Sample Solution-2:
Java Code:
public class test {
public static void main(String[] args) {
String text = "Java";
System.out.println("Original String: "+text);
System.out.println("Move all lower case letters to the front of the said word: "+validate(text));
text = "JavaScript";
System.out.println("\nOriginal String: "+text);
System.out.println("Move all lower case letters to the front of the said word: "+validate(text));
text = "SQLite";
System.out.println("\nOriginal String: "+text);
System.out.println("Move all lower case letters to the front of the said word: "+validate(text));
}
public static String validate(String text) {
String upper_ch = "",lower_ch = "";
for(char ch : text.toCharArray())
if(Character.isLowerCase(ch))
lower_ch+=ch;
else
upper_ch+= ch;
return lower_ch + upper_ch;
}
}
Sample Output:
Original String: Java Move all lower case letters to the front of the said word: avaJ Original String: JavaScript Move all lower case letters to the front of the said word: avacriptJS Original String: SQLite Move all lower case letters to the front of the said word: iteSQL
Flowchart :
Java Code Editor:
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