How to use BigInteger with an array?
41,058
Solution 1
If you are sure that you only want to use BigInteger then you should think of creating array of BigInteger. So like
BigInteger[] series = new BigInteger[total];
series[0]=BigInteger.ZERO;
series[1]=BigInteger.ONE;
and in loop do
series[i] = series[i-1].add(series[i-2])
See this add API
Solution 2
If total is also BigInteger, then
BigInteger total = new BigInteger("1000000000000000");
BigInteger[] series = new BigInteger[total.intValue()];
series[0] = BigInteger.ZERO;
series[1] = BigInteger.ONE;
series[i] = series[i-1].add(series[i-2]);
Author by
Kevin Ossia
Updated on August 25, 2020Comments
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Kevin Ossia almost 4 years
I'm working on altering my Fibonacci sequencer so that the numbers after reaching ~100th term don't wrap around and become negative. How do I use BigInteger in this code that I wrote:
package me.kevinossia.mystuff; import java.util.Scanner; public class FibonacciDisplayer { public static void main(String[] args) { Scanner input = new Scanner(System.in); int total; System.out.print("This is a Fibonacci sequence displayer.\nHow many numbers would you like it to display?"); total = input.nextInt(); long[] series = new long[total]; series[0]=0; series[1]=1; for(int i=2;i<total;i++) { series[i]=series[i-1] + series[i-2]; } for(int j=0; j<total; j++) { System.out.print(series[j] + "\n"); } input.close(); } }
I've searched google high and low and I can't find anything specific to my case.
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Kevin Ossia over 11 yearsThank you very much, except I am not familiar with ZERO and ONE. I saw them on the javadocs but it didn't say what they were, or at least I didn't see it.
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Adrian Shum over 11 years@KevinOssia If you are not familiar with that, simply put BigInteger.valueOf(0L); or BigInteger.valueOf(1L) should give u the same result