text: Minimum and maximum number of digits required to be removed to make a given number divisible by 3 | Function to find the maximum and minimum number of digits to be removed to make str divisible by 3 ; Convert the string into array of digits ; Count of 0 s , 1 s , and 2 s ; Traverse the array ; Find the sum of digits % 3 ; Cases to find minimum number of digits to be removed ; Cases to find maximum number of digits to be removed ; Driver Code ; Function Call
code: def minMaxDigits ( str , N ) : NEW_LINE INDENT arr = [ 0 ] * N NEW_LINE for i in range ( N ) : NEW_LINE INDENT arr [ i ] = ( ord ( str [ i ] ) - ord ( '0' ) ) % 3 NEW_LINE DEDENT zero = 0 NEW_LINE one = 0 NEW_LINE two = 0 NEW_LINE for i in range ( N ) : NEW_LINE INDENT if ( arr [ i ] == 0 ) : NEW_LINE INDENT zero += 1 NEW_LINE DEDENT if ( arr [ i ] == 1 ) : NEW_LINE INDENT one += 1 NEW_LINE DEDENT if ( arr [ i ] == 2 ) : NEW_LINE INDENT two += 1 NEW_LINE DEDENT DEDENT sum = 0 NEW_LINE for i in range ( N ) : NEW_LINE INDENT sum = ( sum + arr [ i ] ) % 3 NEW_LINE DEDENT if ( sum == 0 ) : NEW_LINE INDENT print ( "0" , end = " ▁ " ) NEW_LINE DEDENT if ( sum == 1 ) : NEW_LINE INDENT if ( one and N > 1 ) : NEW_LINE INDENT print ( "1" , end = " ▁ " ) NEW_LINE DEDENT elif ( two > 1 and N > 2 ) : NEW_LINE INDENT print ( "2" , end = " ▁ " ) NEW_LINE DEDENT else : NEW_LINE INDENT print ( " - 1" , end = " ▁ " ) NEW_LINE DEDENT DEDENT if ( sum == 2 ) : NEW_LINE INDENT if ( two and N > 1 ) : NEW_LINE INDENT print ( "1" , end = " ▁ " ) NEW_LINE DEDENT elif ( one > 1 and N > 2 ) : NEW_LINE INDENT print ( "2" , end = " ▁ " ) NEW_LINE DEDENT else : NEW_LINE INDENT print ( " - 1" , end = " ▁ " ) NEW_LINE DEDENT DEDENT if ( zero > 0 ) : NEW_LINE INDENT print ( N - 1 , end = " ▁ " ) NEW_LINE DEDENT elif ( one > 0 and two > 0 ) : NEW_LINE INDENT print ( N - 2 , end = " ▁ " ) NEW_LINE DEDENT elif ( one > 2 or two > 2 ) : NEW_LINE INDENT print ( N - 3 , end = " ▁ " ) NEW_LINE DEDENT else : NEW_LINE INDENT print ( " - 1" , end = " ▁ " ) NEW_LINE DEDENT DEDENT str = "12345" NEW_LINE N = len ( str ) NEW_LINE minMaxDigits ( str , N ) NEW_LINE