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110 lines
3.3 KiB
Java
110 lines
3.3 KiB
Java
/*This is a java program to find K such elements given by users, such that those numbers are closer to the median of the given sequence.
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We first find the median of the sequence and then compare with each element such that the difference between the median and number is minimum, and print such k elements.*/
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//This is a java program to find k numbers closest to median of N numbers
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import java.util.Random;
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import java.util.Scanner;
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public class K_Close_Numbers_Median
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{
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static int N = 25;
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static int[] sequence = new int[N];
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public static void sort()
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{
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int i, j, temp;
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for (i = 1; i < N; i++)
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{
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j = i;
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temp = sequence[i];
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while (j > 0 && temp < sequence[j - 1])
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{
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sequence[j] = sequence[j - 1];
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j = j - 1;
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}
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sequence[j] = temp;
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}
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}
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public static int median()
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{
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if(N%2 == 0)
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return ((sequence[N/2-1] + sequence[N/2])/2);
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else
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return sequence[N/2];
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}
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public static void main(String args[])
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{
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Random random = new Random();
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for(int i=0; i<N; i++)
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sequence[i] = Math.abs(random.nextInt(100));
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sort();
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System.out.println("The Sequence is: ");
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for(int i=0; i<N; i++)
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System.out.print(sequence[i] + " ");
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int median = median();
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System.out.println("\nEnter the number of elements close to median you want: ");
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Scanner sc = new Scanner(System.in);
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int k = sc.nextInt();
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int i, j;
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if(N%2 == 0)
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{
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i = N/2-1;
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j = N/2;
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}
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else
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{
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i = N/2-1;
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j = N/2+1;
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}
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boolean flag = false;
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int n;
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for(n=0; n<k; n++)
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{
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if(median-sequence[i] < sequence[j]-median)
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{
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System.out.print(sequence[i] + " ");
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i--;
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if(i == -1)
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{
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n++;
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flag = true;
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break;
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}
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}
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else
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{
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System.out.print(sequence[j] + " ");
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j++;
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if(j == N)
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{
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n++;
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break;
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}
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}
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}
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while(n < k)
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{
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if(flag == true)
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{
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System.out.print(sequence[j] + " ");
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j++;
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n++;
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}
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else
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{
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System.out.print(sequence[i] + " ");
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i--;
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n++;
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}
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}
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}
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}
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/*
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The Sequence is:
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3 6 14 17 21 27 27 35 35 38 38 40 40 41 41 43 55 67 73 77 79 82 82 83 87
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Enter the number of elements close to median you want:
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5
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40 41 41 38 38
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