Minimum Sum of Four Digit Number After Splitting Digits
Description
You are given a positive integer num
consisting of exactly four digits. Split num
into two new integers new1
and new2
by using the digits found in num
. Leading zeros are allowed in new1
and new2
, and all the digits found in num
must be used.
- For example, given
num = 2932
, you have the following digits: two2
's, one9
and one3
. Some of the possible pairs[new1, new2]
are[22, 93]
,[23, 92]
,[223, 9]
and[2, 329]
.
Return the minimum possible sum of new1
and new2
.
Example 1:
Input: num = 2932 Output: 52 Explanation: Some possible pairs [new1, new2] are [29, 23], [223, 9], etc. The minimum sum can be obtained by the pair [29, 23]: 29 + 23 = 52.
Example 2:
Input: num = 4009 Output: 13 Explanation: Some possible pairs [new1, new2] are [0, 49], [490, 0], etc. The minimum sum can be obtained by the pair [4, 9]: 4 + 9 = 13.
Constraints:
1000 <= num <= 9999
Solution(javascript)
/**
* @param {number} num
* @return {number}
*/
var minimumSum = function(num) {
const array = num.toString().split('')
array.sort((a, b) => a - b)
return Number(array[0] + array[2]) + Number(array[1] + array[3])
};