5)SumArray and 6) fibarray Write a method called sumArray that takes in as a par

Question

5)SumArray and 6) fibarray

Write a method called sumArray that takes in as a parameter an array of integers x and returns an integer. Your method should return the sum of all the values stored in x. public static int [] x) Write a main method that takes an integer n from the user using a Scanner object and prints the sum of the first n Fibonacci numbers. Repeat until the user enters a negative number. You must call the fibArray and sumArray methods you defined in questions 4 and 5. You can assume these methods are defined in the same class and can be used directly from the main method. Hint: call the fibArray method to produce an array, then pass that array as a parameter into sumArray to get the result.

Explanation / Answer

1)

public static int sumArray(int[] x){

for(int i=0;i<x.length;i++){

sum+=x[i]

}

return sum;

}

2)

import java.util.Scanner;

public static int[] fibArray(int n){

int[] arr=new int[n];

int k=0;

int prev, next, sum, n;

prev=next=1

for(n=1;n<=10;n++)

{

arr[k++]=prev;

sum=prev+next;

prev=next;

next=sum;

}

return arr;

}

public static void main(String args[]){

Scanner inp = new Scanner(System.in);

int n;

int flag=1;

int sum;

do{

flag=1;

n=inp.nextInt();

if(n<0)

flag=0;

else{

int[] arr=new int[n];

arr[]=fibArr(n);

System.out.println("Sum of "+n+" fibonnaci nos is "+sumArray(arr));

}while(flag==1);

}

Related Questions

Navigate

• Browse (All)
• Browse 5
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.