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s->{int y=0,i=0;for(;i<7;y+=(i%2<1?3:1-i%2*2)*(s.charAt(i++)-48));return 1058-(y%10<1?10:y%10)==s.charAt(7)-48;;}
Try it online!Try it online!
s->{int y=0,i=0;for(;i<7;y+=(i%2<1?3:1)*(s.charAt(i++)-48));return 10-(y%10<1?10:y%10)==s.charAt(7)-48;}
Try it online!
s->{int y=0,i=0;for(;i<7;y+=(3-i%2*2)*(s.charAt(i++)-48));return 58-(y%10<1?10:y%10)==s.charAt(7);}
