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Solution.java
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Solution.java
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package g1501_1600.s1539_kth_missing_positive_number;
// #Easy #Array #Binary_Search #Binary_Search_I_Day_6
// #2022_04_10_Time_0_ms_(100.00%)_Space_42.1_MB_(82.14%)
public class Solution {
public int findKthPositive(int[] arr, int k) {
int missed = 0;
for (int i = 0; i < arr.length; i++) {
if (i == 0) {
missed += arr[0] - 1;
if (missed >= k) {
return k;
}
} else {
missed += arr[i] - arr[i - 1] - 1;
if (missed >= k) {
missed -= arr[i] - arr[i - 1] - 1;
int result = arr[i - 1];
while (missed++ < k) {
result++;
}
return result;
}
}
}
int result = arr[arr.length - 1];
while (missed++ < k) {
result++;
}
return result;
}
}