If all required digits are present in the Map
if ( p == 0 ) { String st = " " ; st = String . Join ( " " , h0 ) + String . Join ( " " , h1 ) ; st += ' : ' + String . Join ( " " , m0 ) + String . Join ( " " , m1 ) ; st += ' : ' + String . Join ( " " , s0 ) + String . Join ( " " , s1 ) ; return st ; }