+
+ /**
+ * Returns the total length of the supplied ranges
+ *
+ * @param ranges
+ * @return
+ */
+ public static int getLength(List<int[]> ranges)
+ {
+ if (ranges == null)
+ {
+ return 0;
+ }
+ int length = 0;
+ for (int[] range : ranges)
+ {
+ length += Math.abs(range[1] - range[0]) + 1;
+ }
+ return length;
+ }
+
+ /**
+ * Answers true if any range includes the given value
+ *
+ * @param ranges
+ * @param value
+ * @return
+ */
+ public static boolean contains(List<int[]> ranges, int value)
+ {
+ if (ranges == null)
+ {
+ return false;
+ }
+ for (int[] range : ranges)
+ {
+ if (range[1] >= range[0] && value >= range[0] && value <= range[1])
+ {
+ /*
+ * value within ascending range
+ */
+ return true;
+ }
+ if (range[1] < range[0] && value <= range[0] && value >= range[1])
+ {
+ /*
+ * value within descending range
+ */
+ return true;
+ }
+ }
+ return false;
+ }