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solution.java
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solution.java
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import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;
class solution {
/*
* Complete the 'pickingNumbers' function below.
*
* The function is expected to return an INTEGER. The function accepts
* INTEGER_ARRAY a as parameter.
*/
public static int pickingNumbers(List<Integer> a) {
// Write your code here
// sort the list
Collections.sort(a);
int start = 0;
int i = 0;
int ans = 0;
while (i < a.size()) {
// if the difference is greater than 1, move the start index to the position of
// i
if (Math.abs(a.get(start) - a.get(i)) > 1) {
start = i;
}
// keep storing the max
ans = Math.max(ans, i - start + 1);
i++;
}
i--;
return Math.max(ans, i - start + 1);
}
}
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));
int n = Integer.parseInt(bufferedReader.readLine().trim());
String[] aTemp = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");
List<Integer> a = new ArrayList<>();
for (int i = 0; i < n; i++) {
int aItem = Integer.parseInt(aTemp[i]);
a.add(aItem);
}
int result = Result.pickingNumbers(a);
bufferedWriter.write(String.valueOf(result));
bufferedWriter.newLine();
bufferedReader.close();
bufferedWriter.close();
}
}