CheckSUm_2.java

package adventofcode;

/**
 * Why Did you create this class? what does it do?
 */
public class CheckSUm_2 {

    public static void main(String[] args) {
        String s = "1236\t741\t557\t1029\t144\t101\t1968\t2159\t1399\t80\t1139\t1167\t1695\t82\t90\t2236\n" +
                   "2134\t106\t107\t1025\t584\t619\t191\t496\t80\t352\t351\t2267\t1983\t1973\t97\t1244\n" +
                   "3227\t179\t691\t3177\t172\t1636\t3781\t2020\t3339\t2337\t189\t3516\t1500\t176\t159\t3279\n" +
                   "201\t688\t364\t180\t586\t659\t623\t577\t188\t265\t403\t670\t195\t720\t115\t37\n" +
                   "1892\t1664\t2737\t2676\t849\t2514\t923\t171\t311\t218\t255\t2787\t1271\t188\t1278\t2834\n" +
                   "150\t3276\t204\t603\t3130\t587\t3363\t3306\t2890\t127\t176\t174\t383\t3309\t213\t1620\n" +
                   "5903\t3686\t200\t230\t6040\t4675\t6266\t179\t5375\t1069\t283\t82\t6210\t6626\t6398\t1954\n" +
                   "942\t2324\t1901\t213\t125\t2518\t655\t189\t2499\t160\t2841\t2646\t198\t173\t1841\t200\n" +
                   "232\t45\t272\t280\t44\t248\t50\t266\t296\t297\t236\t254\t58\t212\t276\t48\n" +
                   "563\t768\t124\t267\t153\t622\t199\t591\t204\t125\t93\t656\t198\t164\t797\t506\n" +
                   "243\t4746\t1785\t204\t568\t4228\t2701\t4303\t188\t4148\t4831\t1557\t4692\t166\t4210\t3656\n" +
                   "72\t514\t1572\t172\t1197\t750\t1392\t1647\t1587\t183\t1484\t213\t1614\t718\t177\t622\n" +
                   "1117\t97\t2758\t2484\t941\t1854\t1074\t264\t2494\t83\t1434\t96\t2067\t2825\t2160\t92\n" +
                   "2610\t1290\t204\t2265\t1374\t2581\t185\t852\t207\t175\t3308\t1500\t2898\t1120\t1892\t3074\n" +
                   "2322\t1434\t301\t2156\t98\t2194\t587\t1416\t1521\t94\t1985\t424\t91\t119\t1869\t1073\n" +
                   "66\t87\t176\t107\t2791\t109\t21\t92\t3016\t2239\t1708\t3175\t3210\t2842\t446\t484";

        //System.out.println(solve(s));
        System.out.println(solve2(s));
        //System.out.println(solve("5\t1\t9\t5\n" + "7\t5\t3\n" + "2\t4\t6\t8"));
        System.out.println(solve2("5\t9\t2\t8\n" + "9\t4\t7\t3\n" + "3\t8\t6\t5"));
    }

    private static int solve(String s) {
        String[] a = s.split("\n");
        int sum = 0;
        for (int i = 0; i < a.length; i++) {
            String[] aa = a[i].split("\t");
            int max = Integer.MIN_VALUE;
            int min = Integer.MAX_VALUE;
            if (aa.length == 0)
                continue;
            for (int j = 0; j < aa.length; j++) {
                int current = Integer.parseInt(aa[j]);
                min = Math.min(min, current);
                max = Math.max(max, current);
            }
            sum += max - min;
        }
        return sum;
    }

    private static int solve2(String s) {
        String[] a = s.split("\n");
        int sum = 0;
        for (int i = 0; i < a.length; i++) {
            String[] aa = a[i].split("\t");
            if (aa.length == 0)
                continue;
            for (int j = 0; j < aa.length; j++) {
                int current = Integer.parseInt(aa[j]);
                for (int k = j + 1; k < aa.length; k++) {
                    int current1 = Integer.parseInt(aa[k]);
                    if (Math.max(current, current1) % Math.min(current, current1) == 0) {
                        sum += (Math.max(current, current1) / Math.min(current, current1));
                        break;
                    }
                }
            }
        }
        return sum;
    }
}