Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Returns a sorted array of middle terms of the reduction polynomial.
     * @param k The unsorted array of middle terms of the reduction polynomial
     * of length 1 or 3.
     * @return the sorted array of middle terms of the reduction polynomial.
     * This array always has length 3.
     */
    static int[] convertMidTerms(int[] k) {
        int[] res = new int[3];

        if (k.length == 1) {
            res[0] = k[0];
        } else {
            if (k.length != 3) {
                throw new IllegalArgumentException("Only Trinomials and pentanomials supported");
            }

            if (k[0] < k[1] && k[0] < k[2]) {
                res[0] = k[0];
                if (k[1] < k[2]) {
                    res[1] = k[1];
                    res[2] = k[2];
                } else {
                    res[1] = k[2];
                    res[2] = k[1];
                }
            } else if (k[1] < k[2]) {
                res[0] = k[1];
                if (k[0] < k[2]) {
                    res[1] = k[0];
                    res[2] = k[2];
                } else {
                    res[1] = k[2];
                    res[2] = k[0];
                }
            } else {
                res[0] = k[2];
                if (k[0] < k[1]) {
                    res[1] = k[0];
                    res[2] = k[1];
                } else {
                    res[1] = k[1];
                    res[2] = k[0];
                }
            }
        }

        return res;
    }
}