appending zeros to make number of 10 digit [duplicate]

Question

I know it is a simple question and I know the way to do it, only need of mine here is Performance and with less time as possible it should do.

I am getting input as

long l = 149;

I want to make this number of size 10 with additional numbers to be added at starting to make it of 10 digit. above number should get converted to,

 0000000149.

Similarly,

1 -> 0000000001 13 -> 0000000013 888888 -> 0000888888

1. I tried with loop, like checking number length, subtracting number length by 10, then adding number of zero as the subtraction result i got.

2 Already created array like

arr[0, 00, 000, 0000, 00000, 000000, 0000000, 00000000, 000000000, 0000000000];

here I am doing same thing, subtracting my number length with 10 and getting arr[numberLenth -10] + number

I am getting desired result.

I want to make sure to check is there any better solution to this like using bitwise operator for such requirement?

Thanks

in which way are you creating these formatting? If console, you can always just do System.out.format("%10d", numberVariable); — user2277872
– user2277872, Commented Jul 30, 2013 at 7:41

ChanceLai · Accepted Answer · 2013-07-30 08:17:49Z

1

Do you like this?

String.format("%010d", 123);

answered Jul 30, 2013 at 7:43

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2 Comments

"%10d" prints leading zeroes? Since when?

I got the answer, i need to do like String data = String.format("%010d", 1234);