【leetcode】14. Longest Common Prefix(easy)
2018-01-09 11:14
267 查看
本题的意思是求所有字符串的最长公共前缀,即数组的所有字符串都包含这个前缀。
abcdefg
abcccc
返回 abc
这种题目还是抠细节的,比如for循环中当result为“”空字符串时,只在第一次初始化,后面如果result还是空串,那么就不初始化。
需要加入一个标志位,如果不匹配了,那么就跳出循环
// 2018.1.8
//14. Longest Common Prefix
string longestCommonPrefix(vector<string>& strs) {
string result = "";
if (strs.size() == 0)
return result;
if (strs.size() == 1)
return strs[0];
for (vector<string>::iterator it = strs.begin(); it != strs.end(); ++it)
{
if (result.size() == 0 && it == strs.begin())
{
result = *it;
}
else
{
string & looper = (result.size() > it->size()) ? *it : result; // 长度小的那个
string & cmp = (result.size() > it->size()) ? result : *it;
string temp = "";
bool flag = true;
for (int i = 0; i < looper.size() && flag; ++i)
{
if (looper[i] == cmp[i])
{
temp += looper[i];
}
else
flag = false;
}
result = temp;
}
}
return result;
}
abcdefg
abcccc
返回 abc
这种题目还是抠细节的,比如for循环中当result为“”空字符串时,只在第一次初始化,后面如果result还是空串,那么就不初始化。
需要加入一个标志位,如果不匹配了,那么就跳出循环
// 2018.1.8
//14. Longest Common Prefix
string longestCommonPrefix(vector<string>& strs) {
string result = "";
if (strs.size() == 0)
return result;
if (strs.size() == 1)
return strs[0];
for (vector<string>::iterator it = strs.begin(); it != strs.end(); ++it)
{
if (result.size() == 0 && it == strs.begin())
{
result = *it;
}
else
{
string & looper = (result.size() > it->size()) ? *it : result; // 长度小的那个
string & cmp = (result.size() > it->size()) ? result : *it;
string temp = "";
bool flag = true;
for (int i = 0; i < looper.size() && flag; ++i)
{
if (looper[i] == cmp[i])
{
temp += looper[i];
}
else
flag = false;
}
result = temp;
}
}
return result;
}
相关文章推荐
- LeetCode 14. Longest Common Prefix (easy)
- Leetcode 14. Longest Common Prefix (Easy) (cpp)
- LeetCode 14. Longest Common Prefix(字符串)
- leetcode_Longest Common Prefix_easy
- [LeetCode]14. Longest Common Prefix(自学留存)
- 【LeetCode】14.Longest Common Prefix(Easy)解题报告
- leetcode第十四题(easy)——Longest Common Prefix
- LeetCode系列之——14. Longest Common Prefix(JavaScript)
- Leetcode刷题记——14. Longest Common Prefix(最长公共前缀)
- leetcode_14_Longest Common Prefix (easy)
- Leetcode[Easy] - Longest Common Prefix
- LeetCode-Easy刷题(4) Longest Common Prefix
- 【leetcode】14. Longest Common Prefix(Python & C++)
- 【LeetCode】14. Longest Common Prefix (2 solutions)
- 14. Longest Common Prefix(leetcode)
- Leetcode:14. Longest Common Prefix(JAVA)
- LeetCode-Easy部分中标签为String 14. Longest Common Prefix
- [Leetcode 14, Easy] Longest common prefix
- Leetcode 14. Longest Common Prefix(python)
- LeetCode--14. Longest Common Prefix(最长公共前缀子串)