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3 years ago

5

If a class is reusable, that is to say that it can be used in several different applications, then it has been designed using

what good design principle? An example might be a button class.

Computers and Technology

1 answer:

emmainna [20.7K]3 years ago

6 0

High cohesion

fghfghdgfhgdhgh

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Write a procedure named Str_find that searches for the first matching occurrence of a source string inside a target string and r

kirill115 [55]

Answer: Provided in the explanation section

Explanation:

Str_find PROTO, pTarget:PTR BYTE, pSource:PTR BYTE

.data

target BYTE "01ABAAAAAABABCC45ABC9012",0

source BYTE "AAABA",0

str1 BYTE "Source string found at position ",0

str2 BYTE " in Target string (counting from zero).",0Ah,0Ah,0Dh,0

str3 BYTE "Unable to find Source string in Target string.",0Ah,0Ah,0Dh,0

stop DWORD ?

lenTarget DWORD ?

lenSource DWORD ?

position DWORD ?

.code

main PROC

INVOKE Str_find,ADDR target, ADDR source

mov position,eax

jz wasfound ; ZF=1 indicates string found

mov edx,OFFSET str3 ; string not found

call WriteString

jmp quit

wasfound: ; display message

mov edx,OFFSET str1

call WriteString

mov eax,position ; write position value

call WriteDec

mov edx,OFFSET str2

call WriteString

quit:

exit

main ENDP

;--------------------------------------------------------

Str_find PROC, pTarget:PTR BYTE, ;PTR to Target string

pSource:PTR BYTE ;PTR to Source string

;

; Searches for the first matching occurrence of a source

; string inside a target string.

; Receives: pointer to the source string and a pointer

; to the target string.

; Returns: If a match is found, ZF=1 and EAX points to

; the offset of the match in the target string.

; IF ZF=0, no match was found.

;--------------------------------------------------------

INVOKE Str_length,pTarget ; get length of target

mov lenTarget,eax

INVOKE Str_length,pSource ; get length of source

mov lenSource,eax

mov edi,OFFSET target ; point to target

mov esi,OFFSET source ; point to source

; Compute place in target to stop search

mov eax,edi ; stop = (offset target)

add eax,lenTarget ; + (length of target)

sub eax,lenSource ; - (length of source)

inc eax ; + 1

mov stop,eax ; save the stopping position

; Compare source string to current target

cld

mov ecx,lenSource ; length of source string

L1:

pushad

repe cmpsb ; compare all bytes

popad

je found ; if found, exit now

inc edi ; move to next target position

cmp edi,stop ; has EDI reached stop position?

jae notfound ; yes: exit

jmp L1 ; not: continue loop

notfound: ; string not found

or eax,1 ; ZF=0 indicates failure

jmp done

found: ; string found

mov eax,edi ; compute position in target of find

sub eax,pTarget

cmp eax,eax ; ZF=1 indicates success

done:

ret

Str_find ENDP

END main

cheers i hoped this helped !!

6 0

3 years ago

When was the phone Built

quester [9]

The first phone was made in 1854 by <span>Antonio Meucci.

Other inventors like </span>Johann Philipp Reis, <span>Alexander Graham Bell, Elisha Gray, and Thomas Edison reinvented the telephone or enhanced it.</span>

3 0

3 years ago

Read 2 more answers

Gennadij [26K]

A server stopped provide service to 100 users

5 0

3 years ago

For this programming assignment, you have to write a Java program that tests whether a given input string represents a Valid E-m

Step2247 [10]

Answer:

To check if the email address is correct it should have only one "@" symbol, we have to split the input string by this symbol. The code in java to achieve this is the following:

class Main {

public static void main(String[] args) {

String email = "[email protected]";

String[] email_split = email.split("@");

long count_a = email.chars().filter(ch -> ch == '@').count();

if(count_a == 1){

System.out.println("User name: "+email_split[0]);

System.out.println("Domain name: "+email_split[1]);

}else{

System.out.println("There is no valid email address.");

}

}

}

Explanation:

The explanation of the code is given below:

class Main {

public static void main(String[] args) {

String email = "[email protected]"; //input string to evaluate if is valid email

long count_a = email.chars().filter(ch -> ch == '@').count(); //Count how many times the symbol @ appears

if(count_a == 1){ //A valid email only contains one at

String[] email_split = email.split("@"); //separate the values using the at in an array

System.out.println("User name: "+email_split[0]); //the first element is the username

System.out.println("Domain name: "+email_split[1]); //the second element is the domain name

}else{

System.out.println("There is no valid email address."); //If there isn´t an at or are more than one then display a message saying the email is not valid

}

}

}

8 0

3 years ago

You plan to use the Fill Down feature on a formula and you need to keep a cell reference the same. Which one of the following fo

viva [34]

You have to use this format for example $A$2
The format for absolute reference is designated with a dollar sign ($). If both column and, put a dollar sign before and in between the row and column. By doing this, column and row do not change when copied.

3 0

3 years ago