Removendo espaços de uma string usando Stringstream
Solução para remover espaços de uma string já foi postada aqui . Neste artigo outra solução usando stringstream é discutido.
Algoritmo:
1. Enter the whole string into stringstream. 2. Empty the string. 3. Extract word by word and concatenate to the string.
Programa 1: Usando EOF .
CPP // C++ program to remove spaces using stringstream #include using namespace std ; // Function to remove spaces string removeSpaces ( string str ) { stringstream ss ; string temp ; // Storing the whole string // into string stream ss < < str ; // Making the string empty str = '' ; // Running loop till end of stream while ( ! ss . eof ()) { // Extracting word by word from stream ss >> temp ; // Concatenating in the string to be // returned str = str + temp ; } return str ; } // Driver function int main () { // Sample Inputs string s = 'This is a test' ; cout < < removeSpaces ( s ) < < endl ; s = 'geeks for geeks' ; cout < < removeSpaces ( s ) < < endl ; s = 'geeks quiz is awesome!' ; cout < < removeSpaces ( s ) < < endl ; s = 'I love to code' ; cout < < removeSpaces ( s ) < < endl ; return 0 ; }
Saída
Thisisatest geeksforgeeks geeksquizisawesome! Ilovetocode
Complexidade de tempo: O(n) onde n é o comprimento da string
Sobre)
Programa 2: Usando getline() .
CPP // C++ program to remove spaces using stringstream // and getline() #include using namespace std ; // Function to remove spaces string removeSpaces ( string str ) { // Storing the whole string // into string stream stringstream ss ( str ); string temp ; // Making the string empty str = '' ; // Running loop till end of stream // and getting every word while ( getline ( ss temp ' ' )) { // Concatenating in the string // to be returned str = str + temp ; } return str ; } // Driver function int main () { // Sample Inputs string s = 'This is a test' ; cout < < removeSpaces ( s ) < < endl ; s = 'geeks for geeks' ; cout < < removeSpaces ( s ) < < endl ; s = 'geeks quiz is awesome!' ; cout < < removeSpaces ( s ) < < endl ; s = 'I love to code' ; cout < < removeSpaces ( s ) < < endl ; return 0 ; } // Code contributed by saychakr13
Saída
Thisisatest geeksforgeeks geeksquizisawesome! Ilovetocode
Complexidade de tempo: O(n)
Espaço Auxiliar: O(n)
