5 strPtr(s1) This function will take a string which has two single

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5. strPtr(s1) This function will take a string which has two

single-digit integers somewhere in it. The first integer

found is the starting point. The second integer is the

substring length. The output from this function is a return

of a substring of the string parameter with numbers

removed first, which begins at the starting point and

returns a string the length indicated by the substring length

integer. Output must be presented in the format identical to

that in the check function at the bottom of the template. If

an empty string is passed in, the following string will be

returned in identical format to the one shown: \"Empty

string\" If the integers passed in as starting and length

values are invalid when applied to the string (after the

numbers have been removed from it), the following string

will be returned in identical format to the one shown:

“Invalid indices\" Output MUST BE as presented in the

EXACT format used in the call to the check function at the

bottom of the template. SAMPLE RUNS strPtr(\'\') will

return this string in the following format: \"Empty string\"

strPtr(\'a39abcdefghiljklmnopa\') will return this string in

the following format: \'cdefghilj\' strPtr(\'a27\') will return

this string in the following format: \"Invalid indices” def

strPtr(s1): pass # Use this return statement to return the

string s2 where s2 is your substring #return s2 # Use this

return statement for an empty string #return (\"Empty

string\") # # # # This function takes a two dimensional list:

a value, an address. The object is to start at the first entry

in the list # and use the address to go to the next entry in

the list to get the next address. If you can end up at 0 by

the end then # you have completed the game. If you

cannot get to 0 (just keep moving through the list) then

there is an error. If the # address points to an invalid entry

then there is an error. Keep count of the number of jumps.

Going into the first entry # is the first jump. # # INPUT: two

dimensional list with the first entry being a value and the

second being an address # # OUTPUT: if successful then

count of number of jumps (going to the first entry counts as

1) and the sting \"Made it home in\", count # # ERROR

CHECK: \"No valid path.\" and \"No valid path. Duplicate

visits.\"

Solution

i hope u will understand this program

public class Recursion {

/** Return the number of times c occurs in s. */

public static int number(char c, String s) {

if (s.length() == 0) return 0;

return (c == s.charAt(0) ? 1 : 0) + number(c,

s.substring(1));

}

/** Return a copy of s with each character duplicated. */

public static String dup(String s) {

if (s.length() == 0) return s;

return s.charAt(0) + (s.charAt(0) +

dup(s.substring(1)));

}

/** Return a copy of s with duplicate adjacent chars

deleted.

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5. strPtr(s1) This function will take a string which has two single-digit integers somewhere in it. The first integer found is the starting point. The second integer is the substring length. The output from this function is a return of a substring of the string parameter with numbers removed first, which begins at the starting point and returns a string the length indicated by the substring length integer. Output must be presented in the format identical to that in the check function at the bottom of the template. If an empty string is passed in, the following string will be returned in identical format to the one shown: \"Empty string\" If the integers passed in as starting and length values are invalid when applied to the string (after th e numbers have been removed from it), the following string will be returned in identical format to the one shown: “Invalid indices\" Output MUST BE as presented in the EXACT format used in the call to the check function at the bottom of the template. SAMPL E RUNS strPtr(\'\') will return this string in the following format: \"Empty string\" strPtr(\'a39abcdefghiljklmnopa\') will return this string in the following format: \'cdefghilj\' strPtr(\'a27\') will return this string in the following format: \"Invalid indices” def strPtr(s1): pass # Use this return statement to return the string s2 where s2 is your substring #return s2 # Use this return statement for an empty string #return ( \"Empty string\") # # # # This function takes a two ...
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