Programming-Idioms

Idiom

# 156 Format integer with zero-padding

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Lead paragraph

Assign to string _s the value of integer _i in 3 decimal digits. Pad with zeros if _i < _100. Keep all digits if _i ≥ _1000.

Implementation

Language

Java

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Imports

Code

String s = String.format("%03d", i);

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Other implementations

import "fmt"

s := fmt.Sprintf("%03d", i)

s := format('%.3d',[i]);

s = "%03d" % i

let s = format!("{:03}", i);

import std.format : format;

string s = format("%03d", i);

s = format('03d', i)

$s = sprintf('%03d', $i);

my $s = sprintf '%03d', $i;

write (unit=s,fmt='(I0.3)') i

string s = string.Format("{0:000}",i);

(def s (format "%03d" i))

let s = i.toString();
if(i<100)
  s = ('00'+i).slice(-3);