Sunny Number in JavaIn this section, we will learn what is sunny numbers and how to create a Java program to find the sunny numbers. We will also create a Java program to find all the sunny numbers between the specified range. Sunny NumberA number is called a sunny number if the number next to the given number is a perfect square. In other words, a number N will be a sunny number if N+1 is a perfect square. Let's understand it through an example. Sunny Number ExampleSuppose, we have to check if 80 is a sunny number or not. Given, N=80 then N+1 will be 80+1=81, which is a perfect square of the number 9. Hence 80 is a sunny number. Let's take another number 10. Given, N=10 then N+1 will be 10+1=11, which is not a perfect square. Hence 10 is not a sunny number. Steps to Find Sunny NumberThe logic is very simple. To find the sunny number, we need only to check whether N+1 is the perfect square or not.
Let's implement the above steps in a Java program. Sunny Number Java ProgramSunnyNumberExample1.java Output 1: Enter a number to check: 80 The given number is a sunny number. Output 2: Enter a number to check: 670 The given number is not a sunny number. Let's create another Java program and find all the sunny numbers between a given range. SunnyNumberExample2.java Output: Enter lower range: 1 Enter upper range: 1000 The Sunny number from 1 to 1000 are: 3 8 15 24 35 48 63 80 99 120 143 168 195 224 255 288 323 360 399 440 483 528 575 624 675 728 783 840 899 960
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