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#660 - Remove 9
Problem Description
Start from integer 1, remove any integer that contains 9 such as 9, 19, 29...
Now, you will have a new integer sequence [1, 2, 3, 4, 5, 6, 7, 8, 10, 11, ...].
Given an integer n, return the nth (1-indexed) integer in the new sequence.
Solution
/**
* @param {number} n
* @return {number}
*/
var newInteger = function(n) {
let result = 0;
let base = 1;
while (n > 0) {
result += (n % 9) * base;
n = Math.floor(n / 9);
base *= 10;
}
return result;
};