String Sorting Program in java ~ Multiplex Coder

Question:

John likes to play with string and he always tries to do something new with it. This time he found a very typical way to sort a string. What he did is that he took a string composed of both lowercase and uppercase letters and sorted it in such a manner such that the uppercase and lowercase letter comes in an alternate manner but in sorted way. He needs your help to complete this job as fast as possible.

Example:
Input: bAwutndekWEdkd

Output: AbEdWddekkntuw

Explanation:
Here we can see that letter ‘A’,’E’,’W’ are sorted as well as letters “b,d,d,d,e,k,k,n,t,u,w” are sorted but both appears alternately in the string as far as possible.

Note: Create main() inside the class ‘SortDriver’

Input:
The first line of input contains the string to be sorted.

Output:
Print the string in required sorted format.
Sample Input:

Enter the String: HelLoWoRld

Sample Output:

The Sorted String is: HdLeRlWloo

CODE:–

SortDriver .java

import java.util.Scanner;
import java.lang.*;
class SortDriver{
public final static int MAX =100;
public static String alternateSort(String s1)
{
int n= s1.length();
char [] s = s1.toCharArray();
int[] lCount = new int [MAX];
int[] uCount = new int [MAX];
for (int i=0;i<n;i++)
{
if(Character.isUpperCase(s[i]))
uCount[s[i] - 'A']++;
else
lCount[s[i] - 'a']++;
}
int i=0,j=0,k=0;
while(k<n)
{
while(i<MAX && uCount[i] ==0)
i++;
if(i<MAX)
{
s[k++]= (char)('A'+i);
uCount[i]--;
}
while(j<MAX && lCount[j]==0)
j++;
if(j<MAX)
{
s[k++]= (char)('a'+j);
lCount[j]--;
}
}
return(new String(s));
}

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Enter the String:");
String str;
str =input.nextLine();
System.out.println("the Sorted String is:");
System.out.println(alternateSort(str));
}
}

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