From 8853e5a754797317793f3229b7fe8aa6fac918b1 Mon Sep 17 00:00:00 2001
From: Lavesh Verma <lit2021034@iiitl.ac.in>
Date: Sat, 22 Oct 2022 15:33:02 +0530
Subject: [PATCH] Word break problem

---
 Dynamic Programming/cpp/Word_break.cpp | 55 ++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Dynamic Programming/cpp/Word_break.cpp

diff --git a/Dynamic Programming/cpp/Word_break.cpp b/Dynamic Programming/cpp/Word_break.cpp
new file mode 100644
index 0000000..649cfa9
--- /dev/null
+++ b/Dynamic Programming/cpp/Word_break.cpp	
@@ -0,0 +1,55 @@
+class Solution {
+public:
+
+    #include <bits/stdc++.h>
+    
+    int dp[305];
+
+    unordered_set<string> s;
+
+    bool helper(string& str, int i, int n)
+    {
+        
+        if(i == n)
+        {
+            return true;
+        }
+        
+
+        if(dp[i] != -1)
+        {
+            return dp[i];
+        }
+        
+
+        for(int j = i; j < n; j++)
+        {
+            if(s.count(str.substr(i, j - i + 1)))
+            {
+                if(helper(str, j + 1, n))
+                {
+                    return dp[i] = true;
+                }
+            }
+        }
+        
+
+        return dp[i] = false;
+    }
+    
+    bool wordBreak(string str, vector<string>& wordDict) {
+
+        int n = str.size();
+        
+
+        for(auto word : wordDict)
+        {
+            s.insert(word);
+        }
+        
+
+        memset(dp, -1, sizeof(dp));
+
+        return helper(str, 0, n);
+    }
+};
\ No newline at end of file