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PickingNumbers.java
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34 lines (30 loc) · 776 Bytes
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import java.util.*;
import java.io.*;
/**
* Created by rajat goyal on 3/19/2017.
*/
public class PickingNumbers {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int[] a = new int[n];
for(int a_i=0; a_i < n; a_i++){
a[a_i] = in.nextInt();
}
pickNumbers(a, n);
}
public static void pickNumbers(int[] a, int n) {
Arrays.sort(a);
int max = 0;
for (int i = 0; i < n; i++) {
int j = i + 1, count = 1;
while(j < n && a[j] <= a[i] + 1){
count++;
j++;
}
if(count > max)
max = count;
}
System.out.println(max);
}
}