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Copy pathFibonacci.java
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48 lines (42 loc) · 1.23 KB
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public class Fibonacci {
public static void main(String[] args) {
System.out.println(isFibonacci(1));
System.out.println(isFibonacci(2));
System.out.println(isFibonacci(3));
System.out.println(isFibonacci(4));
System.out.println(isFibonacci(5));
System.out.println(isFibonacci(6));
System.out.println(isFibonacci(7));
System.out.println(isFibonacci(9));
System.out.println(isFibonacci(10));
System.out.println(isFibonacci(11));
System.out.println(isFibonacci(12));
System.out.println(isFibonacci(13));
System.out.println(isFibonacci(21));
}
static int isFibonacci(int n) {
int a = 1, b = 1, testNumber = 1;
while(testNumber < n) {
testNumber = b + a;
a = b;
b = testNumber;
}
if(testNumber == n)
return 1;
return 0;
}
static int isFibonacci1(int n) {
if (n == 1)
return 1;
int fibonacci = 0;
int fibo1 = 1;
int fibo2 = 1;
while (fibonacci < n) {
fibonacci = fibo1 + fibo2;
fibo1 = fibo2;
fibo2 = fibonacci;
}
if (fibonacci == n) return 1;
return 0;
}
}