ZCW-Interview-Problem2/src/main/java/io/zipcoder/Problem2.java at 3b1dec45a4996bc68407003bb6b89555f3f09b14 · Zipcoder/ZCW-Interview-Problem2 · GitHub

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package io.zipcoder;

public class Problem2 {

    int numPrevious = 0;
    int numPrePrevious = 1;
    StringBuilder fibonacciString = new StringBuilder();

    public String fibonacciIteration(int n) {
        if (n == 0) {
            fibonacciString.append("0");
        }
        if (n == 1) {
            fibonacciString.append("0, 1");
        } else {
            fibonacciString.append("0, 1");
            for (int nextNum = 0; nextNum < n; nextNum++) {
                nextNum = numPrevious + numPrePrevious;
                if (nextNum > n) {
                    break;
                }
                fibonacciString.append(", " + nextNum);
                numPrevious = numPrePrevious;
                numPrePrevious = nextNum;
            }
        }
        return fibonacciString.toString();
    }

//    public String fibonacciRecursion(int n) {
//
//    }

}