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Copy pathLongestIncreaseSubsequence.java
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43 lines (38 loc) · 1.09 KB
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import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
public class Solution {
private static int calLIS(int [] array) {
Map<Integer, List<Integer>> lis = new HashMap<>();
for (int i = 0; i < array.length; i++) {
lis.put(i, new LinkedList<Integer>());
}
lis.get(0).add(array[0]);
int longestIncSub = 1;
for (int i = 1 ; i < array.length; i++) {
for (int j = 0; j < i; j++) {
if (array[i] >= array[j] && lis.get(i).size() < lis.get(j).size() + 1) {
lis.get(i).clear();
lis.get(i).addAll(lis.get(j));
}
}
lis.get(i).add(array[i]);
if (lis.get(i).size() > longestIncSub) {
longestIncSub = lis.get(i).size();
}
}
return longestIncSub;
}
public static void main(String[] args) throws IOException {
BufferedReader ob = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(ob.readLine());
int [] array = new int[n];
for (int i = 0; i < n; i++) {
array[i] = Integer.parseInt(ob.readLine());
//System.out.println(array[i]);
}
System.out.println(calLIS(array));
}
}