From 317c821cc374b0df502ea821a957d0978801d3e8 Mon Sep 17 00:00:00 2001
From: Shivesh Kumar <87690329+shivesh41kr@users.noreply.github.com>
Date: Mon, 10 Oct 2022 16:45:52 +0530
Subject: [PATCH] LeetCode_1048_longest_string_chain.cpp

LeetCode Problem No. - 1048 solution
---
 .../1048_longest_string_chain.cpp             | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Leetcode problems/1048_longest_string_chain.cpp

diff --git a/Leetcode problems/1048_longest_string_chain.cpp b/Leetcode problems/1048_longest_string_chain.cpp
new file mode 100644
index 00000000..0f7d71b8
--- /dev/null
+++ b/Leetcode problems/1048_longest_string_chain.cpp	
@@ -0,0 +1,25 @@
+class Solution
+{
+public:
+    int longestStrChain(vector<string> &words)
+    {
+        unordered_map<string, int> dp;
+        int ans = 0;
+        sort(words.begin(), words.end(), sortByLength);
+        for (string word : words)
+        {
+            for (int i = 0; i < word.length(); i++)
+            {
+                string predecessor = word.substr(0, i) + word.substr(i + 1);
+                dp[word] = max(dp[word], dp[predecessor] + 1);
+            }
+            ans = max(ans, dp[word]);
+        }
+        return ans;
+    }
+
+    static bool sortByLength(string &s1, string &s2)
+    {
+        return s1.length() < s2.length();
+    }
+};