As For JS - Talks

решение последней задачи function digitPermutation(nums) { var groups = new Map; for (var i = 0, l = nums.length; i < l; i++) { var num = nums[i]; var n = num; var mask = 0; var length = 0; while (n > 0) { var digit = n % 10; mask |= (1 << digit); n = (n / 10) | 0; length++; } var key = (length << 16) | mask; var group = groups.get(key); !group ? groups.set(key, [num]) : group.push(num); } return Array.from(groups.values()); } console.log(digitPermutation([123, 321, 456, 654, 112, 12, 0, 0, 1, 1])); console.log(digitPermutation([1, 11, 111, 2, 22])); console.log(digitPermutation([0, 10, 100]));