LeetCode-in-Java
3726. Remove Zeros in Decimal Representation
Easy
You are given a positive integer n.
Return the integer obtained by removing all zeros from the decimal representation of n.
Example 1:
Input: n = 1020030
Output: 123
Explanation:
After removing all zeros from 1020030, we get 123.
Example 2:
Input: n = 1
Output: 1
Explanation:
1 has no zero in its decimal representation. Therefore, the answer is 1.
Constraints:
1 <= n <= 1015
Solution
public class Solution {
public long removeZeros(long n) {
StringBuilder x = new StringBuilder();
String s = Long.toString(n);
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) != '0') {
x.append(s.charAt(i));
}
}
return Long.parseLong(x.toString());
}
}