int number; // = some int while (number > 0) { print( number % 10); number = number / 10; } The mod operator will give you the remainder of doing int division on a number. Other versions get the string from start. The above solution causes overflow soon. int number = 1234; get the digits() { int[4] digits; digits[0] = the first digit of [int number]. Generate unique random number in PHP. PHP. Go to the editor Input: Each test case consists of two non-negative integers x and y which are separated by a space in a line. sprintf () function. The basic syntax of rand() function is following: rand(); or rand(min,max); Parameters of rand() function. You can have it automatically deduce the base of the number from the prefix of the string using the same syntax as integer literals in PHP ("0x" for hexadecimal, "0" for octal, non-"0" for decimal) by passing a base of 0 to intval(): 0 and y > 0. For example, Logic: Take the number. The first place is the 0, the second the 1 and so on. 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