Easy
Given a string s
of zeros and ones, return the maximum score after splitting the string into two non-empty substrings (i.e. left substring and right substring).
The score after splitting a string is the number of zeros in the left substring plus the number of ones in the right substring.
Example 1:
Input: s = “011101”
Output: 5
Explanation: All possible ways of splitting s into two non-empty substrings are:
left = “0” and right = “11101”, score = 1 + 4 = 5
left = “01” and right = “1101”, score = 1 + 3 = 4
left = “011” and right = “101”, score = 1 + 2 = 3
left = “0111” and right = “01”, score = 1 + 1 = 2
left = “01110” and right = “1”, score = 2 + 1 = 3
Example 2:
Input: s = “00111”
Output: 5
Explanation: When left = “00” and right = “111”, we get the maximum score = 2 + 3 = 5
Example 3:
Input: s = “1111”
Output: 3
Constraints:
2 <= s.length <= 500
s
consists of characters '0'
and '1'
only.class Solution {
fun maxScore(s: String): Int {
var zeroes = if (s[0] == '0') 1 else 0
var ones = 0
for (i in 1 until s.length) {
if (s[i] == '1') {
ones++
}
}
var maxScore = zeroes + ones
for (i in 1 until s.length - 1) {
if (s[i] == '0') {
zeroes++
} else {
ones--
}
maxScore = Math.max(maxScore, zeroes + ones)
}
return maxScore
}
}