System.out.println(dynamicArray); System.out.println("size: " + dynamicArray.size); System.out.println("capacity: " + dynamicArray.capacity); System.out.println("empty: " + dynamicArray.isEmpty()); } } public class DynamicArray { int size; int capacity = 10; Object[] array;
public DynamicArray() { this.array = new Object[capacity]; } public DynamicArray(int capacity) { this.capacity = capacity; this.array = new Object[capacity]; }
public Object get(int index) { return array[index]; }
This is so sick. Thank you for taking the time to explain and build a working ArrayList. I love people like you that explain things with both graphics and code. I have 0 questions about a topic when you put it together this organized. And the code in the comments (and the commented explanations)... 😙👌
What's the difference between making instantiating array as Object[] array and making the class able to hold generic objects using Java generics (i.e. public class DynamicArray)? If we use Object[], wouldn't we have to cast elements to its actual type when retrieving them (e.g. int first = (int) array[0])?
Hey, not sure whether am i wrong or not but for the DELETE function, i think we forgot to handle 'what if the DATA happened to be INDEX 0' So maybe we should add an IF statement for when INDEX == 0 if( i == 0) { for (int x = 0 ; x < size ; x ++) { array[x] = array[x + 1]; } break; }
in the .toString() (assuming that you didn't use StringBuilder), wouldn't it be much more efficient and faster by using this?: String string = ""; for(int i=0;i0){ string += ", "; } string += array[i]; } return "[" + string + "]"; instead of doing this?: for(int i=0;i
i'm just waiting for full-course video ,,,, offline is better to watch for me. i'v all collection of full. very thank you .... i also reqst to make video on algorithm by easy representation. good DataStructur and Algorithm video is very rare in youTube.
You Can do this in delete method to be easy to understand public void delet(Object data) { for (int i = 0; i < size; i++) { if (array[i]== data){ for(int j =i ; j < size; j++){ array[j]= array[j+1]; } array[size-1]= null; size--; } } }
hey brocode. Just a tip for your next videos. If you are going to import images in to your project is it possible to make a link in the descriptions to download the same objects? It's pretty annoying or even sometimes impossible to find an image with the same size etc... just a tip love ur videos:) also make new java videos; if you got time;)
I made this delete method and somehow it worked public void delete(Object data) { for(int i = 0; i < size; i++) { if(array[i] == data) { for(int j = i; j < size; j++) { array[j] = array[j + 1]; } if(size
I dont understand how for(int i = size; i > index; i--) { array[i] = array[i - 1]; } works. from my understanding it should push all the values to the left because its subtracting but it pushes them to the right, i have no clue how this works
We are keeping i = size ( i.e,last index +1). let's say the size is 4 and we have to insert data in index 2 when i = 4 ..the data in index 3 (i-1) will get copied in index 4 (i) i--; now i=3 ...the data in index 2(i-1) will get copied in index 3 (i ) i--; now i = 2 is not greater than index which we have passed in ( which is 2) the loop terminates. then we can insert the data like array[ 2] = data ;
bro in the toString() method you created without calling the method in the main class how did it be automatically called when you printed the dynamic array please reply
I might be a bit late lolol But to answer your question, this is because println() has an overloaded variant which calls "object.toString()" When we write the toString() body all we're actually doing is overloading that method
When you do the insert method, why is the for loop: for (int i = size; i > index; i--) array[i] = array[i - 1]; rather than for (int i = size + 1; i > index; i--) array[i] = array[i - 1]; if you have an array = {A, B, C, D, null, null} size = 4 So the first for loop would set array[4] = array[3] which is saying the fourth element is equal to C. But what happens to D?
i starts at 0. array[4] = "null" since it's index 0, 1, 2, 3, 4 So array[4] = array[3] is correct as it is setting null to D, D to C...... n Hope that makes sense
I want you to make a tutorial and how to make splash screen in mcp minecraft 1.8.8, if you didn’t do it’s okay! I just tryna find a tutorial how to make a splash screen in mcp minecraft 1.8.8
Why use a dynamic array in C++ when we can give int array[n]. Dynamic arrays are created when number of data items is unknown. But we could also use int n; cin>>n; int array[n];
Question = In java programming.. Int[ ] [ ] a= { {1,2,3}, {5,6,7}, {8,9,10} }; And I want to print , 1 5 8 2 6 9 3 7 10 (as a output) Sir How to print this output, please help ??
bro in the toString() method you created without calling the method in the main class how did it be automatically called when you printed the dynamic array please reply
The .toString() method can be called both implicitly and explicitly. Calling this method is unnecessary as the java compiler automatically calls it on the array as it sees the code trying to print that array. Simply, it gets called automatically even if you don't call it explicitly. Hope it helps.
Наука
I forgot to add a get() method for random access 🤦♂️
I've included that in the code posted here...
public class Main{
public static void main(String[] args) {
DynamicArray dynamicArray = new DynamicArray(5);
dynamicArray.add("A");
dynamicArray.add("B");
dynamicArray.add("C");
//System.out.println(dynamicArray.get(0));
//dynamicArray.insert(0, "X");
//dynamicArray.delete("A");
//System.out.println(dynamicArray.search("C"));
System.out.println(dynamicArray);
System.out.println("size: " + dynamicArray.size);
System.out.println("capacity: " + dynamicArray.capacity);
System.out.println("empty: " + dynamicArray.isEmpty());
}
}
public class DynamicArray {
int size;
int capacity = 10;
Object[] array;
public DynamicArray() {
this.array = new Object[capacity];
}
public DynamicArray(int capacity) {
this.capacity = capacity;
this.array = new Object[capacity];
}
public Object get(int index) {
return array[index];
}
public void add(Object data) {
if(size >= capacity) {
grow();
}
array[size] = data;
size++;
}
public void insert(int index, Object data) {
if(size >= capacity) {
grow();
}
for(int i = size; i > index; i--) {
array[i] = array[i - 1];
}
array[index] = data;
size++;
}
public void delete(Object data) {
for(int i = 0; i < size; i++) {
if(array[i] == data) {
for(int j = 0; j < (size - i - 1); j++){
array[i + j] = array[i + j + 1];
}
array[size - 1] = null;
size--;
if(size
Can u make a swift all in 1 course plssss
You forgot the clear() method,
public static void clear(){
array=null;
size=0;
}
thank you sir for your explanation
Practicing...
import java.util.*;
public class Main
{
public static void main(String[] args) {
DynamicArray dynamicArray = new DynamicArray();
//System.out.println(dynamicArray.capacity);
dynamicArray.add("1");
dynamicArray.add("2");
dynamicArray.add("3");
dynamicArray.insert(0,"0");
dynamicArray.delete("")
System.out.println(dynamicArray);
System.out.println("size: " +dynamicArray.size);
System.out.println("capacity: " +dynamicArray.capacity);
System.out.println("empty: " +dynamicArray.isEmpty());
}
}
***************
public class DynamicArray{
int size;
int capacity = 15;
Object[] array;
public DynamicArray(){
this.array = new Object[capacity];
}
public DynamicArray(int capacity){
this.capacity = capacity;
this.array = new Object[capacity];
}
public void add(Object data){
if(size >= capacity){
grow();
}
array[size] = data;
size++;
}
public void insert(int index, Object data){
if(size >= capacity){
grow();
}
for(int i = size; i > index; i--){
array[i] = array[i-1];//Shifting all elements to the right
}
array[index] = data;
size++;
}
public void delete(Object data){
for(int i = 0; i < size; i++){
if(array[i] == data){
for(int j = 0; j < (size - i + i); j++){
array[i + j] = array[i + j + i];
}
array[size - 1] = null;
size--;
if(size
This is so sick. Thank you for taking the time to explain and build a working ArrayList. I love people like you that explain things with both graphics and code. I have 0 questions about a topic when you put it together this organized. And the code in the comments (and the commented explanations)... 😙👌
Best videos on Data Structure & Algorithm. Thank you for making them!
I hope you will continue this series. It's just amazing!
Thanks! I will be, this playlist will probably have close to 20-ish videos
Currently having java as main programming language in my college, and your videos are really helpful. Thanks!
very glad to see your views increasing :) you deserve it and I'm happy that people finally found this gem.
Yayy, Was waiting for it, your explanations are really great, thanks :)
i love your videos, they're so easy to watch and understand. thank you.
great LECTURE.
still need to see this over again. love your lectures.
Np! Thanks for watching Fahad!
Thank you so much for providing this enlighting tutorial.
You bring back the joy of code. Feel's good to see relaxing tutorials just solving problems🌻
Such as amazing video. This helped me out heaps! thanks. Subscribed !
That was valuable ! Thank you sir for the great work👍🏾
Thanks for this video. It was interesting to see you implement a custom dynamic list rather than just using Java's ArrayList.
Thanks bro! Very good and easy to understand explanations
You are doing really great!
Thanks bro I like a video like this and tutorial KEEP IT UP 💓💓💆♂️
Don't know Java yet trying to understand it with little bit of Python knowledge I have, thank you for the video.
nice sound and very good lession thank you
Fantastic. Tank you so much!
Thank you, great explonation.
thankyou bro great content as always
In add method, we have to put if condition after size++ for condition of size==capacity
Thank you. Very useful ;)
Hey bro this tutorial was long and BOOM THANKS BEEN HERE SINCE THE ROBOT SOUNDTRACK🤣
Can you make a video on Java Streams. I would really appreciate it ❤️
❤️Thanks bro for.....................
Sweet video, tanks!
Great video!
thank you so much!
Love you brooo.from Bangladesh
What's the difference between making instantiating array as Object[] array and making the class able to hold generic objects using Java generics (i.e. public class DynamicArray)? If we use Object[], wouldn't we have to cast elements to its actual type when retrieving them (e.g. int first = (int) array[0])?
TU delft??
Helpful!
Thanks, Bro!
nice one bro
good video! ty!
Woah cool
brilliant👍
Hey, not sure whether am i wrong or not but for the DELETE function, i think we forgot to handle 'what if the DATA happened to be INDEX 0' So maybe we should add an IF statement for when INDEX == 0
if( i == 0) {
for (int x = 0 ; x < size ; x ++) {
array[x] = array[x + 1];
}
break;
}
in the .toString() (assuming that you didn't use StringBuilder), wouldn't it be much more efficient and faster by using this?:
String string = "";
for(int i=0;i0){
string += ", ";
}
string += array[i];
}
return "[" + string + "]";
instead of doing this?:
for(int i=0;i
thanks bro!
Thanks!
remember when your channel was 11k subs? me niether Good Job, Keep it up
hey ayman! Yeah it's been a heck of a ride
Nice Class
i'm just waiting for full-course video ,,,, offline is better to watch for me. i'v all collection of full. very thank you .... i also reqst to make video on algorithm by easy representation. good DataStructur and Algorithm video is very rare in youTube.
I feel like in some instances with coding you just have to accept the information and be like well idk why but it works so it works for me? lol
👍🏻👍🏻
bro, do you videos for databases, ex: mysql. tnx bro.
I love you bro from Morocco
👨💻👍👌
You Can do this in delete method to be easy to understand
public void delet(Object data) {
for (int i = 0; i < size; i++) {
if (array[i]== data){
for(int j =i ; j < size; j++){
array[j]= array[j+1];
}
array[size-1]= null;
size--;
}
}
}
Thanks
Please make some applications on javafx like you made for swing
And after database please teach artificial intelligence
amazing contnet
Bro i want to watch this playlisy but can u please tell me what are data structures and algorithm.
nice
Can you make tutorial for mips assembly?
hey brocode. Just a tip for your next videos. If you are going to import images in to your project is it possible to make a link in the descriptions to download the same objects? It's pretty annoying or even sometimes impossible to find an image with the same size etc...
just a tip
love ur videos:)
also make new java videos; if you got time;)
thx
Dude why does it automatically converts the input to string without calling toString() method? Thanks
Bro please make a series on kivy GUI with python 🙏🙏🙏
I made this delete method and somehow it worked
public void delete(Object data) {
for(int i = 0; i < size; i++) {
if(array[i] == data) {
for(int j = i; j < size; j++) {
array[j] = array[j + 1];
}
if(size
I dont understand how
for(int i = size; i > index; i--) {
array[i] = array[i - 1];
}
works. from my understanding it should push all the values to the left because its subtracting but it pushes them to the right, i have no clue how this works
We are keeping i = size ( i.e,last index +1).
let's say the size is 4 and we have to insert data in index 2
when i = 4 ..the data in index 3 (i-1) will get copied in index 4 (i)
i--;
now i=3 ...the data in index 2(i-1) will get copied in index 3 (i )
i--;
now i = 2 is not greater than index which we have passed in ( which is 2) the loop terminates.
then we can insert the data like
array[ 2] = data ;
Yaaa boi
Thanks bro 🫡
Hyy bro make video on android development. I will appreciate that 💓
guys its irrevelant but do you know how to scrap live data from web sites (stock, crypto) with c++
🖖
Pls bring on hcking😊😊
bro are your all in one vedios sufficent for start coding for the first time, i mean if i watch all of em
Long time no see
Is this program code similar to ArrayList internal code??
Android developement tutorial please..🙏🙏
bro in the toString() method you created without calling the method in the main class how did it be automatically called when you printed the dynamic array please reply
I might be a bit late lolol
But to answer your question, this is because println() has an overloaded variant which calls "object.toString()"
When we write the toString() body all we're actually doing is overloading that method
What are the chances of asking to build a dynamic array in FAANG interview? Ideally for me it'll take time to ace this algorithm appropriately.
java is wierdly similar to c#, i know , it's the other way around but that code is wierdly fimiliar
When you do the insert method, why is the for loop:
for (int i = size; i > index; i--)
array[i] = array[i - 1];
rather than
for (int i = size + 1; i > index; i--)
array[i] = array[i - 1];
if you have an array = {A, B, C, D, null, null}
size = 4
So the first for loop would set array[4] = array[3] which is saying the fourth element is equal to C.
But what happens to D?
i starts at 0.
array[4] = "null" since it's index 0, 1, 2, 3, 4
So array[4] = array[3] is correct as it is setting null to D, D to C...... n
Hope that makes sense
yup and the size kind of is your pointer holding the space for the move to the right
7:54
Hey bro, could you include the source code in C++ also? It would be great.
I want you to make a tutorial and how to make splash screen in mcp minecraft 1.8.8, if you didn’t do it’s okay! I just tryna find a tutorial how to make a splash screen in mcp minecraft 1.8.8
💆♂️🧖♀️
I'm actually not familiar with Minecraft mods... at least not yet
@@BroCodez hmm okay 😆
Why use a dynamic array in C++ when we can give int array[n].
Dynamic arrays are created when number of data items is unknown.
But we could also use
int n;
cin>>n;
int array[n];
Is there any difference in all in one course and other which you gave made separately in same language ?
I compile all the lessons in the playlist into one video. I think the Java course only has 80 videos from the 100 playlist tho
@@BroCodez okk
@@BroCodez so for java I should refer to the playlist ?
Hey man, I know you're busy and all, but I have a little coding problem I need help with.
13.01
Hell yeah I was like 666 very cool.
I don't get how this code works...
for(int i = 0; i
random comment for u my dude
Random comment down below - checked
random comment
no translate for me!! my E is bad so i can't understand what are u Saying
They should auto-translate, it might take a while to generate since this video is longer than usual
@@BroCodez thanks, i very like your videos. I hope u will make videos.
+1 respect 😂😂😂
Question = In java programming..
Int[ ] [ ] a= {
{1,2,3},
{5,6,7},
{8,9,10}
};
And I want to print ,
1 5 8
2 6 9
3 7 10
(as a output)
Sir How to print this output, please help ??
It's just like reading through regular 2D array but printout a[j][i] instead of a[i][j]. Hope it helps
So why did you get kicked out of heaven?
😏
Random comment
bro in the toString() method you created without calling the method in the main class how did it be automatically called when you printed the dynamic array please reply
The .toString() method can be called both implicitly and explicitly. Calling this method is unnecessary as the java compiler automatically calls it on the array as it sees the code trying to print that array. Simply, it gets called automatically even if you don't call it explicitly. Hope it helps.
random comment