Given an integer n and character ch, return a String using the character as thousands separator on the given number.
Examples:
Input: n=1234 , ch =’.’
Output: 1.234
In the above-given input, “.” character is used as the thousands separator and is placed between hundreds and thousands of places starting from the right. The obtained output is returned as String Format.
Input: n=123456789 , ch =’.’
Output: 123.456.789
Approach:
- Convert number into a string.
- Start string traversal from the right side.
- Add the separator character after every three digits
Below is the code using the same approach using Java.
Java
// Java Program for Adding a character as thousands separator// to the given number and returning in string format class GFG { static String thousandSeparator(int n, String ch) { // Counting number of digits int l = (int)Math.floor(Math.log10(n)) + 1; StringBuffer str = new StringBuffer(""); int count = 0; int r = 0; // Checking if number of digits is greater than 3 if (l > 3) { for (int i = l - 1; i >= 0; i--) { r = n % 10; n = n / 10; count++; if (((count % 3) == 0) && (i != 0)) { // Parsing String value of Integer str.append(String.valueOf(r)); // Appending the separator str.append(ch); } else str.append(String.valueOf(r)); } str.reverse(); } // If digits less than equal to 3, directly print n else str.append(String.valueOf(n)); return str.toString(); } // Driver code public static void main(String[] args) { int n = 123456789; String ch = "."; System.out.println(thousandSeparator(n, ch)); }} |
Output
123.456.789
Time Complexity: O(n)