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Copy pathReverseString.java
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42 lines (34 loc) · 1.28 KB
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package strings;
public class ReverseString {
public static void reverseCharArray(char[] array) {
int left = 0, right = array.length - 1;
while (left < right) {
char temp = array[left];
array[left] = array[right];
array[right] = temp;
left++;
right--;
}
}
public static String reverseRecursively(String input1) {
if (input1.isEmpty()) {
return input1;
}
return reverseRecursively(input1.substring(1)) + input1.charAt(0);
}
public static void main(String[] args) {
// With String Builder
String input = "Hello, Java!";
String reversed = new StringBuilder(input).reverse().toString();
System.out.println("Reversed String: " + reversed);
// Without String Builder
// ReverseStringWithoutString
char[] array = { 'H', 'a', 'r', 'i', 'n', 'i', ' ', 'J', 'a', 'v', 'a', '!' };
reverseCharArray(array);
System.out.println("Reversed Char Array: " + new String(array));
// Reverse String Recursively
String input1 = "Hello Dear Recursion";
String reversed1 = reverseRecursively(input1);
System.out.println("Reversed String through Recursion: " + reversed1);
}
}