10 points Array Problem?

Question

Consider array of strings with size (i.e. 20,10,30,20)

Find string from above array with start 35 and length 20

Example
Array of strings is = “cat”,”dog”,”mouse”
With start 5 and length 5 result should be “ogmou”

Can be in any language..

Answer 1

char *ptr;
arr[0]="cat";
arr[1]="dog";
and so on

ptr=arr;
now imagine u got input as 35,20

void myfun(int start,int length)
{
int i=0,j=0;
while(i {
ptr++;
i++;
}

j=start;
while(j {
printf("%c",*ptr);
ptr++;
j++;
}

Since it a contiguous memory allocation(as its an arrangement of arrays it will continue to move 1 byte by byte and will in end print the desired contents

The above program can be improved so dat it does not print '\0' for each string

Answer 2

The length of the given string as a whole is 20+10+30+20=80
Let us denote this string by s.
in PASCAL language (http://www.freepascal.org)

s=s1+s2+s3+s4+s5;
copy(s, pos("wantedstring",s) ,20);

Answer 3

EVERY question gives 10 points. That's no incentive, and it's completely superfluous to mention it.

Rawlyn.

Answer 4

i'm not greedy, i don't need 10 points. i will get two, & that's all i need.. =)