Here is a Python solution for the problem:

```python
def longestCommonPrefix(strs):
if not strs:
return ""
shortest_str = min(strs, key=len)
for i, char in enumerate(shortest_str):
for other in strs:
if other[i] != char:
return shortest_str[:i]
return shortest_str
```

This function works by first checking if the input list `strs` is empty. If it is, it returns an empty string. If it's not, it finds the shortest string in the list, because the common prefix can't be longer than the shortest string.

Then it iterates over each character in the shortest string. For each character, it checks if the same position in all other strings has the same character. If it finds a position where the characters don't match, it returns the prefix up to but not including that position.

If it gets through all characters in the shortest string without finding a mismatch, it returns the entire shortest string, because that means the shortest string is a prefix of all other strings.

Question

Here is a Python solution for the problem:

```python
def longestCommonPrefix(strs):
    if not strs:
        return ""
    shortest_str = min(strs, key=len)
    for i, char in enumerate(shortest_str):
        for other in strs:
            if other[i] != char:
                return shortest_str[:i]
    return shortest_str
```

This function works by first checking if the input list `strs` is empty. If it is, it returns an empty string. If it's not, it finds the shortest string in the list, because the common prefix can't be longer than the shortest string.

Then it iterates over each character in the shortest string. For each character, it checks if the same position in all other strings has the same character. If it finds a position where the characters don't match, it returns the prefix up to but not including that position.

If it gets through all characters in the shortest string without finding a mismatch, it returns the entire shortest string, because that means the shortest string is a prefix of all other strings.

Knowee AI · Accepted Answer

Here is a Python solution for the problem:

```python
def longestCommonPrefix(strs):
    if not strs:
        return ""
    shortest_str = min(strs, key=len)
    for i, char in enumerate(shortest_str):
        for other in strs:
            if other[i] != char:
                return shortest_str[:i]
    return shortest_str
```

This function works by first checking if the input list `strs` is empty. If it is, it returns an empty string. If it's not, it finds the shortest string in the list, because the common prefix can't be longer than the shortest string.

Then it iterates over each character in the shortest string. For each character, it checks if the same position in all other strings has the same character. If it finds a position where the characters don't match, it returns the prefix up to but not including that position.

If it gets through all characters in the shortest string without finding a mismatch, it returns the entire shortest string, because that means the shortest string is a prefix of all other strings.

Question

Solution

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