Question

public static java.lang.String mergeWithRuns​(java.lang.String t, java.lang.String s)

Merges two strings together, using alternating characters from each, except that runs of the same character are kept together. For example,

• mergeWithRuns("abcde", "xyz") returns "axbyczde"
• mergeWithRuns("abbbbcde", "xyzzz") returns "axbbbbyczzzde"

Either or both of the strings may be empty. If the first string is nonempty, its first character will be first in the returned string.

Parameters:

t - first string

s - second string

Returns:

string obtained by merging characters from t and s, preserving runs

Answer 1

Explanation:

import java.io.*;

class Merging // Creating Main Class

{

// Creating and Implementing of method

public static java.lang.String mergePreservingRuns(java.lang.String t,java.lang.String s)

{

java.lang.String str=""; // Declare String variable str

int i=0,j=0; // Declare and Initialize two integer variables i and j

while(i<t.length() && j<s.length()) // Create while loop for two strings have characters left

{

char pChar=t.charAt(i++); // assign character by character to pChar

str+=pChar; // store into str

while(i<t.length() && t.charAt(i)==pChar) // This while loop for check equal characters until length of first string

{

str+=pChar; // then store character by character into str

i++;

}

// simillarly, second string

pChar=s.charAt(j++);

str+=pChar;

while(j<s.length()&&s.charAt(j)==pChar)

{

str+=pChar;

j++;

}

}

// the final string will be stored into the str of two string

while(i<t.length())

str+=t.charAt(i++);

while(j<s.length())

str+=t.charAt(j++);



return str; // this is resultant string to return

}

public static void main(String args[])

{

String s1,s2;

// call mergePreservingRuns() method

s1=mergePreservingRuns("abcde","xyz");

s2=mergePreservingRuns("abbbbcde", "xyzzz");

// print resultant strings

System.out.println("Merging two String alternative Characters: "+s1);

System.out.println("Merging two String alternative Characters: "+s2);

}

}

OUTPUT

F:\>javac Merging.java

F:\>java Merging

Merging two String alternative Characters: axbyczde

Merging two String alternative Characters: axbbbbyczzzde

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