michael@0: function strings()
michael@0: {
michael@0:   var a = [], b = -1;
michael@0:   var s = "abcdefghij", s2 = "a";
michael@0:   var f = "f";
michael@0:   var c = 0, d = 0, e = 0, g = 0;
michael@0:   for (var i = 0; i < 10; i++) {
michael@0:     a[i] = (s.substring(i, i+1) + s[i] + String.fromCharCode(s2.charCodeAt(0) + i)).concat(i) + i;
michael@0:     if (s[i] == f)
michael@0:       c++;
michael@0:     if (s[i] != 'b')
michael@0:       d++;
michael@0:     if ("B" > s2)
michael@0:       g++; // f already used
michael@0:     if (s2 < "b")
michael@0:       e++;
michael@0:     b = s.length;
michael@0:   }
michael@0:   return a.toString() + b + c + d + e + g;
michael@0: }
michael@0: assertEq(strings(), "aaa00,bbb11,ccc22,ddd33,eee44,fff55,ggg66,hhh77,iii88,jjj991019100");