Test case details

Preparation Code

Test cases

Test #1

for (var res = '', i = 0; i < 10000; i++) { res += 'a'; }

Test #2

for (var res = [], i = 0; i < 10000; i++) { res.push('a'); } res = res.join('');

Test #3

for (var res = [], i = 0; i < 10000; i++) { res[i] = 'a'; } res = res.join('');