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saved 1 byte
Source Link
Arnauld
Arnauld
  • 197.6k
  • 20
  • 179
  • 649

##Javascript (ES6), 57 5454 53 bytes

l=>l.sort((a,b)=>(s=a=>1/a+`${a}`.length)(a)-s(b))[0]

For the record, my previous version was more math-oriented but 1 byte bigger:

let f =
l=>l.sort((a,b)=>(s=a=>1/a+`${a-~Math}`.log10(a)length)(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938

##Javascript (ES6), 57 54 bytes

let f =
l=>l.sort((a,b)=>(s=a=>1/a-~Math.log10(a))(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938

##Javascript (ES6), 57 54 53 bytes

l=>l.sort((a,b)=>(s=a=>1/a+`${a}`.length)(a)-s(b))[0]

For the record, my previous version was more math-oriented but 1 byte bigger:

let f =
l=>l.sort((a,b)=>(s=a=>1/a+`${a}`.length)(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938
saved 3 bytes
Source Link
Arnauld
Arnauld
  • 197.6k
  • 20
  • 179
  • 649

##Javascript (ES6), 5757 54 bytes

l=>l.sort((a,b)=>(s=a=>(Maths=a=>1/a-~Math.log10(a)<<24)-a)(a)-s(b))[0]

###Test cases

let f =
l=>l.sort((a,b)=>(s=a=>(Maths=a=>1/a-~Math.log10(a)<<24)-a)(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938

##Javascript (ES6), 57 bytes

l=>l.sort((a,b)=>(s=a=>(Math.log10(a)<<24)-a)(a)-s(b))[0]

###Test cases

let f =
l=>l.sort((a,b)=>(s=a=>(Math.log10(a)<<24)-a)(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938

##Javascript (ES6), 57 54 bytes

l=>l.sort((a,b)=>(s=a=>1/a-~Math.log10(a))(a)-s(b))[0]

###Test cases

let f =
l=>l.sort((a,b)=>(s=a=>1/a-~Math.log10(a))(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938

Source Link
Arnauld
Arnauld
  • 197.6k
  • 20
  • 179
  • 649

##Javascript (ES6), 57 bytes

l=>l.sort((a,b)=>(s=a=>(Math.log10(a)<<24)-a)(a)-s(b))[0]

###Test cases

let f =
l=>l.sort((a,b)=>(s=a=>(Math.log10(a)<<24)-a)(a)-s(b))[0]

console.log(f([1]));                              //  -> 1
console.log(f([9]));                              //  -> 9
console.log(f([1729]));                           //  -> 1729
console.log(f([1, 1]));                           //  -> 1
console.log(f([34, 3]));                          //  -> 3
console.log(f([38, 39]));                         //  -> 39
console.log(f([409, 12, 13]));                    //  -> 13
console.log(f([11, 11, 11, 1]));                  //  -> 1
console.log(f([11, 11, 11, 11]));                 //  -> 11
console.log(f([78, 99, 620, 1]));                 //  -> 1
console.log(f([78, 99, 620, 10]));                //  -> 99
console.log(f([78, 99, 620, 100]));               //  -> 99
console.log(f([1, 5, 9, 12, 63, 102]));           //  -> 9
console.log(f([3451, 29820, 2983, 1223, 1337]));  //  -> 3451
console.log(f([738, 2383, 281, 938, 212, 1010])); //  -> 938