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Apr 24th, 2018
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  1. var array = [[1, 'Привет', 3, 4], ['Ок', 8], [0, -20, 'Пичалька'], [672, 'Номер астероида с моей подписи, кстати'], ['Спорно']];
  2.  
  3. var arrayNew = array.map(function(element) {
  4.     var result = element.reduce(function(sum, elementInside) {
  5.         return '' + sum + ' ' + elementInside;
  6.     });
  7.     return result;
  8. });
  9.  
  10. arrayNew = arrayNew.filter(function(element, index) {
  11.     return index % 2 != 0;  
  12. });
  13.  
  14. arrayNew = arrayNew.reduce(function(sum, element) {
  15.     return sum + '\n' + element;
  16. });
  17.  
  18. console.log(arrayNew);
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