Minimum number of given operations required to convert a string to another string | Function to return the minimum operations of the given type required to convert string s to string t ; Characters are already equal ; Increment count of 0 s ; Increment count of 1 s ; Driver code
< ? php function minOperations ( $ s , $ t , $ n ) { $ ct0 = 0 ; $ ct1 = 0 ; for ( $ i = 0 ; $ i < $ n ; $ i ++ ) { if ( $ s [ $ i ] == $ t [ $ i ] ) continue ; if ( $ s [ $ i ] == '0' ) $ ct0 ++ ; else $ ct1 ++ ; } return max ( $ ct0 , $ ct1 ) ; } $ s = "010" ; $ t = "101" ; $ n = strlen ( $ s ) ; echo minOperations ( $ s , $ t , $ n ) ; ? >