Write a java program to find the first non-repeated character in a string.Given an input string, we have to write a java code to find the first non-repeated character in a string.
For example –
i) Input string – java
Output – j (j is the first non-repeating character in a string)
ii) Input string – web rewrite
Output – b (b is the first non-repeating character in a string)
Write a Java program to check prime number. Given an input integer, We have to write an efficient code to check whether a number is prime or not.
Before writing a program, let’s quickly understand what is a prime number.
A prime number is a number that is greater than 1 and it has no positive divisors other than 1 and itself.
For example – 3, 13, 7 is a prime number, as it’s divisible by 1 and itself. Similarly, 29, 19 etc. are also prime numbers.
6 is not a prime number as it’s divisible by 1, 2, 3 and 6.
2 is the only even prime number.
How to check whether a number is prime or not in Java
Write a java program to print Fibonacci series up to N number, where N is the input integer.
Write a program to print 1 to 100 numbers without using loop. Using loop, (for and while loop) we can easily solve this problem. Think for a moment how do we solve this problem without using loop. We can solve this problem using recursion.