text: Maximum number of times str1 appears as a non | Java implementation of the approach ; Function to return the maximum number of times str1 can appear as a non - overlapping substring in str2 ; str1 cannot never be substring of str2 ; Store the frequency of the characters of str1 ; Store the frequency of the characters of str2 ; To store the required count of substrings ; Current character doesn 't appear in str1 ; Frequency of the current character in str1 is greater than its frequency in str2 ; Update the count of possible substrings ; Driver code
code: class GFG { final static int MAX = 26 ; static int maxSubStr ( char [ ] str1 , int len1 , char [ ] str2 , int len2 ) { if ( len1 > len2 ) return 0 ; int freq1 [ ] = new int [ MAX ] ; for ( int i = 0 ; i < len1 ; i ++ ) freq1 [ i ] = 0 ; for ( int i = 0 ; i < len1 ; i ++ ) freq1 [ str1 [ i ] - ' a ' ] ++ ; int freq2 [ ] = new int [ MAX ] ; for ( int i = 0 ; i < len2 ; i ++ ) freq2 [ i ] = 0 ; for ( int i = 0 ; i < len2 ; i ++ ) freq2 [ str2 [ i ] - ' a ' ] ++ ; int minPoss = Integer . MAX_VALUE ; for ( int i = 0 ; i < MAX ; i ++ ) { if ( freq1 [ i ] == 0 ) continue ; if ( freq1 [ i ] > freq2 [ i ] ) return 0 ; minPoss = Math . min ( minPoss , freq2 [ i ] / freq1 [ i ] ) ; } return minPoss ; } public static void main ( String [ ] args ) { String str1 = " geeks " , str2 = " gskefrgoekees " ; int len1 = str1 . length ( ) ; int len2 = str2 . length ( ) ; System . out . println ( maxSubStr ( str1 . toCharArray ( ) , len1 , str2 . toCharArray ( ) , len2 ) ) ; } }