163:缺失的区间

src/main/java/leetcode/editor/cn/MissingRanges.java

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+//给定一个排序的整数数组 nums ，其中元素的范围在 闭区间 [lower, upper] 当中，返回不包含在数组中的缺失区间。 
+//
+// 示例： 
+//
+// 输入: nums = [0, 1, 3, 50, 75], lower = 0 和 upper = 99,
+//输出: ["2", "4->49", "51->74", "76->99"]
+// 
+// Related Topics 数组 👍 78 👎 0
+
+package leetcode.editor.cn;
+
+import java.util.ArrayList;
+import java.util.List;
+
+//163:缺失的区间
+public class MissingRanges {
+    public static void main(String[] args) {
+        Solution solution = new MissingRanges().new Solution();
+        solution.findMissingRanges(new int[]{0, 1, 3, 50, 75}, 0, 99);
+    }
+
+    //leetcode submit region begin(Prohibit modification and deletion)
+    class Solution {
+        public List<String> findMissingRanges(int[] nums, int lower, int upper) {
+            int index = 0;
+            List<String> list = new ArrayList<>();
+            for (int i = lower; i <= upper; i++) {
+                while (index < nums.length && nums[index] < i) {
+                    index++;
+                }
+                if (index == nums.length) {
+                    if (i == upper) {
+                        list.add("" + i);
+                    } else {
+                        list.add(i + "->" + upper);
+                    }
+                    break;
+                }
+                if (nums[index] > i) {
+                    if (nums[index] == i + 1) {
+                        list.add("" + i);
+                    } else {
+                        list.add(i + "->" + (nums[index] - 1));
+                    }
+                    i = nums[index];
+                    index++;
+                }
+            }
+            return list;
+        }
+    }
+//leetcode submit region end(Prohibit modification and deletion)
+
+}

src/main/java/leetcode/editor/cn/doc/content/MissingRanges.md

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+<p>给定一个排序的整数数组 <em><strong>nums&nbsp;</strong></em>，其中元素的范围在&nbsp;<strong>闭区间</strong>&nbsp;<strong>[<em>lower, upper</em>]</strong>&nbsp;当中，返回不包含在数组中的缺失区间。</p>
+
+<p><strong>示例：</strong></p>
+
+<pre><strong>输入: </strong><strong><em>nums</em></strong> = <code>[0, 1, 3, 50, 75]</code>, <strong><em>lower</em></strong> = 0 和 <strong><em>upper</em></strong> = 99,
+<strong>输出: </strong><code>[&quot;2&quot;, &quot;4-&gt;49&quot;, &quot;51-&gt;74&quot;, &quot;76-&gt;99&quot;]</code>
+</pre>
+<div><div>Related Topics</div><div><li>数组</li></div></div><br><div><li>👍 78</li><li>👎 0</li></div>