To strenge siges at være komplette, hvis de ved sammenkædning indeholder alle de 26 engelske alfabeter. For eksempel er 'abcdefghi' og 'jklmnopqrstuvwxyz' komplette, da de tilsammen har alle tegn fra 'a' til 'z'.
teske vs spiseske
Vi får to sæt størrelser henholdsvis n og m, og vi skal finde antallet af par, der er komplette ved at sammenkæde hver streng fra sæt 1 til hver streng fra sæt 2.
Input : set1[] = {'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc'} set2[] = {'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz'} Output : 7 The total complete pairs that are forming are: 'abcdefghijklmnopqrstuvwxyz' 'abcdefghabcdefghijklmnopqrstuvwxyz' 'abcdefghdefghijklmnopqrstuvwxyz' 'geeksforgeeksabcdefghijklmnopqrstuvwxyz' 'lmnopqrstabcdefghijklmnopqrstuvwxyz' 'abcabcdefghijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' Metode 1 (naiv metode): En simpel løsning er at overveje, at alle par af strenge sammenkæder dem og derefter kontrollere, om den sammenkædede streng har alle tegnene fra 'a' til 'z' ved at bruge et frekvensarray.
Implementering:
C++// C++ implementation for find pairs of complete // strings. #include using namespace std; // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] int countCompletePairs(string set1[] string set2[] int n int m) { int result = 0; // Consider all pairs of both strings for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { // Create a concatenation of current pair string concat = set1[i] + set2[j]; // Compute frequencies of all characters // in the concatenated string. int frequency[26] = { 0 }; for (int k = 0; k < concat.length(); k++) frequency[concat[k] - 'a']++; // If frequency of any character is not // greater than 0 then this pair is not // complete. int i; for (i = 0; i < 26; i++) if (frequency[i] < 1) break; if (i == 26) result++; } } return result; } // Driver code int main() { string set1[] = { 'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc' }; string set2[] = { 'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' }; int n = sizeof(set1) / sizeof(set1[0]); int m = sizeof(set2) / sizeof(set2[0]); cout << countCompletePairs(set1 set2 n m); return 0; }
Java // Java implementation for find pairs of complete // strings. class GFG { // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] static int countCompletePairs(String set1[] String set2[] int n int m) { int result = 0; // Consider all pairs of both strings for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { // Create a concatenation of current pair String concat = set1[i] + set2[j]; // Compute frequencies of all characters // in the concatenated String. int frequency[] = new int[26]; for (int k = 0; k < concat.length(); k++) { frequency[concat.charAt(k) - 'a']++; } // If frequency of any character is not // greater than 0 then this pair is not // complete. int k; for (k = 0; k < 26; k++) { if (frequency[k] < 1) { break; } } if (k == 26) { result++; } } } return result; } // Driver code static public void main(String[] args) { String set1[] = { 'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc' }; String set2[] = { 'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' }; int n = set1.length; int m = set2.length; System.out.println(countCompletePairs(set1 set2 n m)); } } // This code is contributed by PrinciRaj19992
Python3 # Python3 implementation for find pairs of complete # strings. # Returns count of complete pairs from set[0..n-1] # and set2[0..m-1] def countCompletePairs(set1set2nm): result = 0 # Consider all pairs of both strings for i in range(n): for j in range(m): # Create a concatenation of current pair concat = set1[i] + set2[j] # Compute frequencies of all characters # in the concatenated String. frequency = [0 for i in range(26)] for k in range(len(concat)): frequency[ord(concat[k]) - ord('a')] += 1 # If frequency of any character is not # greater than 0 then this pair is not # complete. k = 0 while(k<26): if (frequency[k] < 1): break k += 1 if (k == 26): result += 1 return result # Driver code set1=['abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc'] set2=['ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz'] n = len(set1) m = len(set2) print(countCompletePairs(set1 set2 n m)) # This code is contributed by shinjanpatra
C# // C# implementation for find pairs of complete // strings. using System; class GFG { // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] static int countCompletePairs(string[] set1 string[] set2 int n int m) { int result = 0; // Consider all pairs of both strings for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { // Create a concatenation of current pair string concat = set1[i] + set2[j]; // Compute frequencies of all characters // in the concatenated String. int[] frequency = new int[26]; for (int k = 0; k < concat.Length; k++) { frequency[concat[k] - 'a']++; } // If frequency of any character is not // greater than 0 then this pair is not // complete. int l; for (l = 0; l < 26; l++) { if (frequency[l] < 1) { break; } } if (l == 26) { result++; } } } return result; } // Driver code static public void Main() { string[] set1 = { 'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc' }; string[] set2 = { 'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' }; int n = set1.Length; int m = set2.Length; Console.Write(countCompletePairs(set1 set2 n m)); } } // This article is contributed by Ita_c.
JavaScript <script> // Javascript implementation for find pairs of complete // strings. // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] function countCompletePairs(set1set2nm) { let result = 0; // Consider all pairs of both strings for (let i = 0; i < n; i++) { for (let j = 0; j < m; j++) { // Create a concatenation of current pair let concat = set1[i] + set2[j]; // Compute frequencies of all characters // in the concatenated String. let frequency = new Array(26); for(let i= 0;i<26;i++) { frequency[i]=0; } for (let k = 0; k < concat.length; k++) { frequency[concat[k].charCodeAt(0) - 'a'.charCodeAt(0)]++; } // If frequency of any character is not // greater than 0 then this pair is not // complete. let k; for (k = 0; k < 26; k++) { if (frequency[k] < 1) { break; } } if (k == 26) { result++; } } } return result; } // Driver code let set1=['abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc']; let set2=['ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz'] let n = set1.length; let m=set2.length; document.write(countCompletePairs(set1 set2 n m)); // This code is contributed by avanitrachhadiya2155 </script>
Produktion
7
Tidskompleksitet: O(n * m * k)
Hjælpeplads: O(1)
Metode 2 (optimeret metode ved hjælp af bitmanipulation): I denne metode komprimerer vi frekvensarray til et heltal. Vi tildeler hver bit af det heltal et tegn, og vi sætter det til 1, når tegnet er fundet. Vi udfører dette for alle strengene i begge sæt. Til sidst sammenligner vi bare de to heltal i sættene, og hvis alle bits er sat sammen, danner de et komplet strengpar.
hvad er java hashmap
Implementering:
C++14// C++ program to find count of complete pairs #include using namespace std; // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] int countCompletePairs(string set1[] string set2[] int n int m) { int result = 0; // con_s1[i] is going to store an integer whose // set bits represent presence/absence of characters // in string set1[i]. // Similarly con_s2[i] is going to store an integer // whose set bits represent presence/absence of // characters in string set2[i] int con_s1[n] con_s2[m]; // Process all strings in set1[] for (int i = 0; i < n; i++) { // initializing all bits to 0 con_s1[i] = 0; for (int j = 0; j < set1[i].length(); j++) { // Setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s1[i] = con_s1[i] | (1 << (set1[i][j] - 'a')); } } // Process all strings in set2[] for (int i = 0; i < m; i++) { // initializing all bits to 0 con_s2[i] = 0; for (int j = 0; j < set2[i].length(); j++) { // setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s2[i] = con_s2[i] | (1 << (set2[i][j] - 'a')); } } // assigning a variable whose all 26 (0..25) // bits are set to 1 long long complete = (1 << 26) - 1; // Now consider every pair of integer in con_s1[] // and con_s2[] and check if the pair is complete. for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { // if all bits are set the strings are // complete! if ((con_s1[i] | con_s2[j]) == complete) result++; } } return result; } // Driver code int main() { string set1[] = { 'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc' }; string set2[] = { 'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' }; int n = sizeof(set1) / sizeof(set1[0]); int m = sizeof(set2) / sizeof(set2[0]); cout << countCompletePairs(set1 set2 n m); return 0; }
Java // Java program to find count of complete pairs class GFG { // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] static int countCompletePairs(String set1[] String set2[] int n int m) { int result = 0; // con_s1[i] is going to store an integer whose // set bits represent presence/absence of characters // in string set1[i]. // Similarly con_s2[i] is going to store an integer // whose set bits represent presence/absence of // characters in string set2[i] int[] con_s1 = new int[n]; int[] con_s2 = new int[m]; // Process all strings in set1[] for (int i = 0; i < n; i++) { // initializing all bits to 0 con_s1[i] = 0; for (int j = 0; j < set1[i].length(); j++) { // Setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s1[i] = con_s1[i] | (1 << (set1[i].charAt(j) - 'a')); } } // Process all strings in set2[] for (int i = 0; i < m; i++) { // initializing all bits to 0 con_s2[i] = 0; for (int j = 0; j < set2[i].length(); j++) { // setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s2[i] = con_s2[i] | (1 << (set2[i].charAt(j) - 'a')); } } // assigning a variable whose all 26 (0..25) // bits are set to 1 long complete = (1 << 26) - 1; // Now consider every pair of integer in con_s1[] // and con_s2[] and check if the pair is complete. for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { // if all bits are set the strings are // complete! if ((con_s1[i] | con_s2[j]) == complete) { result++; } } } return result; } // Driver code public static void main(String args[]) { String set1[] = { 'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc' }; String set2[] = { 'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' }; int n = set1.length; int m = set2.length; System.out.println(countCompletePairs(set1 set2 n m)); } } // This code contributed by Rajput-Ji
C# // C# program to find count of complete pairs using System; class GFG { // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] static int countCompletePairs(String[] set1 String[] set2 int n int m) { int result = 0; // con_s1[i] is going to store an integer whose // set bits represent presence/absence of characters // in string set1[i]. // Similarly con_s2[i] is going to store an integer // whose set bits represent presence/absence of // characters in string set2[i] int[] con_s1 = new int[n]; int[] con_s2 = new int[m]; // Process all strings in set1[] for (int i = 0; i < n; i++) { // initializing all bits to 0 con_s1[i] = 0; for (int j = 0; j < set1[i].Length; j++) { // Setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s1[i] = con_s1[i] | (1 << (set1[i][j] - 'a')); } } // Process all strings in set2[] for (int i = 0; i < m; i++) { // initializing all bits to 0 con_s2[i] = 0; for (int j = 0; j < set2[i].Length; j++) { // setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s2[i] = con_s2[i] | (1 << (set2[i][j] - 'a')); } } // assigning a variable whose all 26 (0..25) // bits are set to 1 long complete = (1 << 26) - 1; // Now consider every pair of integer in con_s1[] // and con_s2[] and check if the pair is complete. for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { // if all bits are set the strings are // complete! if ((con_s1[i] | con_s2[j]) == complete) { result++; } } } return result; } // Driver code public static void Main(String[] args) { String[] set1 = { 'abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc' }; String[] set2 = { 'ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' }; int n = set1.Length; int m = set2.Length; Console.WriteLine(countCompletePairs(set1 set2 n m)); } } // This code has been contributed by 29AjayKumar
Python3 # Python3 program to find count of complete pairs # Returns count of complete pairs from set[0..n-1] # and set2[0..m-1] def countCompletePairs(set1 set2 n m): result = 0 # con_s1[i] is going to store an integer whose # set bits represent presence/absence of characters # in set1[i]. # Similarly con_s2[i] is going to store an integer # whose set bits represent presence/absence of # characters in set2[i] con_s1 con_s2 = [0] * n [0] * m # Process all strings in set1[] for i in range(n): # initializing all bits to 0 con_s1[i] = 0 for j in range(len(set1[i])): # Setting the ascii code of char s[i][j] # to 1 in the compressed integer. con_s1[i] = con_s1[i] | (1 << (ord(set1[i][j]) - ord('a'))) # Process all strings in set2[] for i in range(m): # initializing all bits to 0 con_s2[i] = 0 for j in range(len(set2[i])): # setting the ascii code of char s[i][j] # to 1 in the compressed integer. con_s2[i] = con_s2[i] | (1 << (ord(set2[i][j]) - ord('a'))) # assigning a variable whose all 26 (0..25) # bits are set to 1 complete = (1 << 26) - 1 # Now consider every pair of integer in con_s1[] # and con_s2[] and check if the pair is complete. for i in range(n): for j in range(m): # if all bits are set the strings are # complete! if ((con_s1[i] | con_s2[j]) == complete): result += 1 return result # Driver code if __name__ == '__main__': set1 = ['abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc'] set2 = ['ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz'] n = len(set1) m = len(set2) print(countCompletePairs(set1 set2 n m)) # This code is contributed by mohit kumar 29
JavaScript <script> // Javascript program to find count of complete pairs // Returns count of complete pairs from set[0..n-1] // and set2[0..m-1] function countCompletePairs(set1set2nm) { let result = 0; // con_s1[i] is going to store an integer whose // set bits represent presence/absence of characters // in string set1[i]. // Similarly con_s2[i] is going to store an integer // whose set bits represent presence/absence of // characters in string set2[i] let con_s1 = new Array(n); let con_s2 = new Array(m); // Process all strings in set1[] for (let i = 0; i < n; i++) { // initializing all bits to 0 con_s1[i] = 0; for (let j = 0; j < set1[i].length; j++) { // Setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s1[i] = con_s1[i] | (1 << (set1[i][j].charCodeAt(0) - 'a'.charCodeAt(0))); } } // Process all strings in set2[] for (let i = 0; i < m; i++) { // initializing all bits to 0 con_s2[i] = 0; for (let j = 0; j < set2[i].length; j++) { // setting the ascii code of char s[i][j] // to 1 in the compressed integer. con_s2[i] = con_s2[i] | (1 << (set2[i][j].charCodeAt(0) - 'a'.charCodeAt(0))); } } // assigning a variable whose all 26 (0..25) // bits are set to 1 let complete = (1 << 26) - 1; // Now consider every pair of integer in con_s1[] // and con_s2[] and check if the pair is complete. for (let i = 0; i < n; i++) { for (let j = 0; j < m; j++) { // if all bits are set the strings are // complete! if ((con_s1[i] | con_s2[j]) == complete) { result++; } } } return result; } // Driver code let set1=['abcdefgh' 'geeksforgeeks' 'lmnopqrst' 'abc']; let set2=['ijklmnopqrstuvwxyz' 'abcdefghijklmnopqrstuvwxyz' 'defghijklmnopqrstuvwxyz' ] let n = set1.length; let m = set2.length; document.write(countCompletePairs(set1 set2 n m)); // This code is contributed by avanitrachhadiya2155 </script>
Produktion
7
Tidskompleksitet: O(n*m) hvor n er størrelsen af det første sæt og m er størrelsen af det andet sæt.
Hjælpeplads: På)
Denne artikel er bidraget af Rishabh Jain .