题目：

题解：

char* longestCommonPrefix(char** strs, int strsSize) {
    if (strsSize == 0) {
	return "";
}
for (int i = 0; i < strlen(strs[0]); i++) {
	for (int j = 1; j < strsSize; j++) {
		if (strs[0][i] != strs[j][i])
		{
			strs[0][i] = '\0';
			return strs[0];
		}
	}
}
return strs[0];
}