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Copy path4 DEC 04 December Alternate Vowel and Consonant String
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116 lines (115 loc) · 2.99 KB
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4 DEC 04 December Alternate Vowel and Consonant String
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116 lines (115 loc) · 2.99 KB
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class Solution{
public:
void SortingHelper(vector<char>&v)
{
int count[26]={0};
for(int i=0;i<(int)v.size();i++)
{
count[v[i]-'a']++;
}
v.clear();
for(int i=0;i<26;i++)
{
while(count[i])
{
v.push_back('a'+i);
count[i]--;
}
}
}
string rearrange (string s, int N)
{
vector<char>vowel,con;
unordered_set<char>dict={'a','e','i','o','u'};
for(int i=0;i<s.length();i++)
{
if(dict.find(s[i])!=dict.end())
{
vowel.push_back(s[i]);
}
else
{
con.push_back(s[i]);
}
}
if(abs((int)vowel.size()-(int)con.size())>1)
{
return "-1";
}
SortingHelper(vowel);
SortingHelper(con);
string ans="";
if((int)vowel.size()>(int)con.size())
{
int i=0,j=0;
while(i<vowel.size() && j<con.size())
{
if(i<vowel.size())ans.push_back(vowel[i++]);
if(j<con.size())ans.push_back(con[j++]);
}
while(i<vowel.size())
{
ans.push_back(vowel[i++]);
}
while(j<con.size())
{
ans.push_back(con[j++]);
}
}
else if((int)vowel.size()==(int)con.size())
{
if(vowel[0]<con[0])
{
int i=0,j=0;
while(i<vowel.size() && j<con.size())
{
if(i<vowel.size())ans.push_back(vowel[i++]);
if(j<con.size())ans.push_back(con[j++]);
}
while(i<vowel.size())
{
ans.push_back(vowel[i++]);
}
while(j<con.size())
{
ans.push_back(con[j++]);
}
}
else
{
int i=0,j=0;
while(i<vowel.size() && j<con.size())
{
if(j<con.size())ans.push_back(con[j++]);
if(i<vowel.size())ans.push_back(vowel[i++]);
}
while(i<vowel.size())
{
ans.push_back(vowel[i++]);
}
while(j<con.size())
{
ans.push_back(con[j++]);
}
}
}
else
{
int i=0,j=0;
while(i<vowel.size() && j<con.size())
{
if(j<con.size())ans.push_back(con[j++]);
if(i<vowel.size())ans.push_back(vowel[i++]);
}
while(i<vowel.size())
{
ans.push_back(vowel[i++]);
}
while(j<con.size())
{
ans.push_back(con[j++]);
}
}
return ans;
}
};