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  1. /*Increment array of digits
  2.  
  3. Given a non-negative integer represented as an array of digits, increment the integer by one. Return the resulting array of digits.
  4. 1,2,3 */
  5.  
  6.  
  7.  
  8.  
  9.  
  10. class Main{
  11.  
  12.  
  13.     private static int[] printArrayOfDigits(int [] arr)
  14.     {
  15.  
  16.         if(arr == null || arr.length == 0)
  17.         {
  18.             return new int []{-1};
  19.  
  20.  
  21.         }
  22.  
  23.  
  24.         StringBuilder result = new StringBuilder();
  25.  
  26.  
  27.          int carry = 0;
  28.         for(int i=arr.length-1;i>=0;i--)
  29.         {
  30.            int last = arr[i];
  31.  
  32.            if(i == arr.length-1)
  33.            {
  34.                last+=1;
  35.            }
  36.             result.append(last%10 + carry);
  37.             carry = last/10;
  38.         }
  39.  
  40.         int []ans = new int [result.length()];
  41.  
  42.         for(int i=result.length()-1;i>=0;i--)
  43.         {
  44.             ans[i] = result.charAt(i);
  45.         }
  46.  
  47.         return ans;
  48.     }
  49.  
  50.  
  51.     private static void printArr(int []arr)
  52.     {
  53.         System.out.println("inside");
  54.          for(int i=0;i<arr.length;i++)
  55.         {
  56.             System.out.print(arr[i] +" ");
  57.         }
  58.         System.out.println();
  59.     }
  60.  
  61.     public static void main(String []args)
  62.     {
  63.         int []ans = printArrayOfDigits(new int []{3,2,3});
  64.         printArr(ans);
  65.  
  66.     }
  67.  
  68. }
  69.  
Success #stdin #stdout 0.13s 55708KB
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https://ideone.com/SrrWDB
language:
Java (HotSpot 12)
created:
17 hours ago
visibility:
public

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