Java Array Exercises: Sort an array of positive integers of a given array in the specified pattern
Java Array: Exercise-50 with Solution
Write a Java program to sort an array of positive integers of a given array, in the sorted array the value of the first element should be maximum, second value should be minimum value, third should be second maximum, fourth second be second minimum and so on.
Sample Pattern:
[100, 10, 90, 20, 80, 30, 70, 40, 60, 50]
Sample Solution:
Java Code:
import java.util.Arrays;
public class Main
{
static int[] rearrange(int[] new_arra, int n)
{
int temp[] = new int[n];
int small_num = 0, large_num = n-1;
boolean flag = true;
for (int i=0; i < n; i++)
{
if (flag)
temp[i] = new_arra[large_num--];
else
temp[i] = new_arra[small_num++];
flag = !flag;
}
return temp;
}
public static void main(String[] args)
{
int nums[] = new int[]{10, 20, 30, 40, 50, 60, 70, 80, 90, 100};
int result[];
System.out.println("Original Array ");
System.out.println(Arrays.toString(nums));
result = rearrange(nums,nums.length);
System.out.println("New Array ");
System.out.println(Arrays.toString(result));
}
}
Sample Output:
Original Array [10, 20, 30, 40, 50, 60, 70, 80, 90, 100] New Array [100, 10, 90, 20, 80, 30, 70, 40, 60, 50]
Flowchart:
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Java Code Editor:
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Next: Write a Java program to separate 0s on left side and 1s on right side of an array of 0s and 1s in random order.
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Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
Ref: https://bit.ly/32urdSe
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