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In this post, you will find the solution for the **Longest Common Prefix** **in C++, Java & Python-LeetCode problem**. We are providing the **correct and tested solutions** to coding problems present on **LeetCode**. If you are not able to solve any problem, then you can take help from our Blog/website.

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** Link for the Problem** – Longest Common Prefix– LeetCode Problem

Longest Common Prefix– LeetCode Problem

**Problem:**

Write a function to find the longest common prefix string amongst an array of strings.

If there is no common prefix, return an empty string `""`

.

**Example 1:**

Input:strs = ["flower","flow","flight"]Output:"fl"

**Example 2:**

Input:strs = ["dog","racecar","car"]Output:""Explanation:There is no common prefix among the input strings.

**Constraints:**

`1 <= strs.length <= 200`

`0 <= strs[i].length <= 200`

`strs[i]`

consists of only lower-case English letters.

Longest Common Prefix– LeetCode Solutions

class Solution { public: string longestCommonPrefix(vector<string>& strs) { if (strs.empty()) return ""; for (int i = 0; i < strs[0].length(); ++i) for (int j = 1; j < strs.size(); ++j) if (i == strs[j].length() || strs[j][i] != strs[0][i]) return strs[0].substr(0, i); return strs[0]; } };

class Solution { public String longestCommonPrefix(String[] strs) { if (strs.length == 0) return ""; for (int i = 0; i < strs[0].length(); ++i) for (int j = 1; j < strs.length; ++j) if (i == strs[j].length() || strs[j].charAt(i) != strs[0].charAt(i)) return strs[0].substring(0, i); return strs[0]; } }

class Solution: def longestCommonPrefix(self, strs: List[str]) -> str: if not strs: return '' for i in range(len(strs[0])): for j in range(1, len(strs)): if i == len(strs[j]) or strs[j][i] != strs[0][i]: return strs[0][:i] return strs[0]