check-if-two-string-array-are-equivalent.cpp

//question//

Given two string arrays word1 and word2, return true if the two arrays represent the same string, and false otherwise.

A string is represented by an array if the array elements concatenated in order forms the string.

 

Example 1:

Input: word1 = ["ab", "c"], word2 = ["a", "bc"]
Output: true
Explanation:
word1 represents string "ab" + "c" -> "abc"
word2 represents string "a" + "bc" -> "abc"
The strings are the same, so return true.
Example 2:

Input: word1 = ["a", "cb"], word2 = ["ab", "c"]
Output: false
Example 3:

Input: word1  = ["abc", "d", "defg"], word2 = ["abcddefg"]
Output: true
 

Constraints:

1 <= word1.length, word2.length <= 103
1 <= word1[i].length, word2[i].length <= 103
1 <= sum(word1[i].length), sum(word2[i].length) <= 103
word1[i] and word2[i] consist of lowercase letters


//solution//

class Solution {
public:
    bool arrayStringsAreEqual(vector<string>& word1, vector<string>& word2) {
        string s1 = "";
        string s2 = "";
        for(int i=0;i<word1.size();i++)
        {
            s1 += word1[i];
        }
        for(int i=0;i<word2.size();i++)
        {
            s2 += word2[i];
        }
        int n1 = s1.size();
        int n2 = s2.size();
        if(n1!=n2)
        {
            return false;
        }
        for(int i=0;i<s1.size();i++)
        {
            if(s1[i]!=s2[i])
            {
                return false;
            }
        }
        return true;
    }
};