Easy 1662. Check if Two String Arrays are Equivalent

Author: SjxSubham

1662. Check if Two String Arrays are Equivalent

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+// Use any of two approaches below
+
+T.c - O(n)
+s.c - O(1)
+  
+bool arrayStringsAreEqual(vector<string>& word1, vector<string>& word2) {
+
+    // Approach 1
+     string s1 = "";
+        string s2 = ""; 
+        for(string s: word1){
+        s1.append(s);
+        }
+        for(string p: word2){
+        s2.append(p);
+        }
+        if(s1 == s2){
+            return true;
+        }
+        return false;
+
+  
+    //Approach 2
+    // Nice Approach                                                                                    // Use any of two approaches
+  
+       int m = word1.size();
+       int n = word2.size();
+
+       int w1i=0; int i =0;
+       int w2i =0; int j =0;
+
+       while(w1i < m && w2i < n){
+           if(word1[w1i][i] != word2[w2i][j])
+            return false;
+        i++;
+        j++;
+        if(i ==word1[w1i].length()){
+            i =0;
+            w1i++;
+        }
+        if(j == word2[w2i].length()){
+            j =0;
+            w2i++;
+            }
+       }
+       if(w1i == word1.size() && w2i == word2.size())
+            return true;
+
+       return false;
+    }