Reverse a String (using StringBuilder class) in java.
import java.util.*;
public class Strings {
public static void main(String args[]) {
StringBuilder sb = new StringBuilder("HelloWorld");
for(int i=0; i
int front = i;
int back = sb.length() - i - 1;
char frontChar = sb.charAt(front);
char backChar = sb.charAt(back);
sb.setCharAt(front, backChar);
sb.setCharAt(back, frontChar);
}
System.out.println(sb);
}
}
Take an array of numbers as input and check if it is an array sorted in ascending order.
Eg : { 1, 2, 4, 7 } is sorted in ascending order.
{3, 4, 6, 2} is not sorted in ascending order.
Input a string from the user. Create a new string called ‘result’ in which you will replace the letter ‘e’ in the original string with letter ‘i’.
Example :
original = “eabcdef’ ; result = “iabcdif”
Original = “xyz” ; result = “xyz”
Two numbers are entered by the user, x and n. Write a function to find the value of one number raised to the power of another i.e. x^n.