Update 动态规划设计：最长递增子序列.md

create problem-300 c++
labuladong · Nov 11, 2020 · 84569b8 · 84569b8
1 parent 8b8f413
commit 84569b8
Showing 1 changed file with 42 additions and 1 deletion.
diff --git a/动态规划系列/动态规划设计：最长递增子序列.md b/动态规划系列/动态规划设计：最长递增子序列.md
@@ -215,4 +215,45 @@ public int lengthOfLIS(int[] nums) {
 <img src="../pictures/qrcode.jpg" width=200 >
 </p>
 
-======其他语言代码======
+======其他语言代码======
+
+[Kian](https://github.com/KianKw/) 提供 C++ 代码
+
+```c++
+class Solution {
+public:
+    int lengthOfLIS(vector<int>& nums) {
+        /* len 为牌的数量 */
+        int len = nums.size();
+        vector<int> top(len, 0);
+        /* 牌堆数初始化为0 */
+        int piles = 0;
+        for (int i = 0; i < len; i++) {
+            /* nums[i] 为要处理的扑克牌 */
+            int poker = nums[i];
+
+            /***** 搜索左侧边界的二分查找 *****/
+            int left = 0, right = piles;
+            while (left < right) {
+                int mid = left + (right - left) / 2;
+                if (top[mid] > poker) {
+                    right = mid;
+                } else if (top[mid] < poker) {
+                    left = mid + 1;
+                } else if (top[mid] == poker) {
+                    right = mid;
+                }
+            }
+            /*********************************/
+
+            /* 没找到合适的牌堆，新建一堆 */
+            if (left == piles)
+                piles++;
+            /* 把这张牌放到牌堆顶 */
+            top[left] = poker;
+        }
+        /* 牌堆数就是 LIS 长度 */
+        return piles;
+    }
+};
+```