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The format() method of String class in Java 5 is the first choice. You just need to add "%03d" to add 3 leading zeros in an Integer. Formatting instruction to String starts with "%" and 0 is the character which is used in padding.
The standard way to add padding to a string in Python is using the str. rjust() function. It takes the width and padding to be used. If no padding is specified, the default padding of ASCII space is used.
The zfill() method adds zeros (0) at the beginning of the string, until it reaches the specified length. If the value of the len parameter is less than the length of the string, no filling is done.
leftPad() method to left pad a string with zeros, by adding leading zeros to string.
You can use PadLeft
var newString = Your_String.PadLeft(4, '0');
myInt.ToString("D4");
string strvalue="11".PadRight(4, '0');
output= 1100
string strvalue="301".PadRight(4, '0');
output= 3010
string strvalue="11".PadLeft(4, '0');
output= 0011
string strvalue="301".PadLeft(4, '0');
output= 0301
"1".PadLeft(4, '0');
int num = 1;
num.ToString("0000");
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