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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 7: Arrays
  5. Discussions

Day 7: Arrays

  • trangiacuong216
     + 0 comments

    Solution 1: for (int i = n - 1; i >= 0; i--) { System.out.print(arr.get(i)); if (i > 0) System.out.print(" "); }

    ` Solution 2: 

    ArrayList<Integer> newArray = new ArrayList<>();
            newArray.addAll(arr);
            for (int i = 0; i < n; i++) {
                int val = newArray.remove(newArray.size()-1);
                arr.set(i, val);
            }
            for (Integer a : arr) {
                System.out.print(a +" ");
            }