I didn't understand

Question

why myArr[0][2] =42 ?

Answer 1

@kais hassn nobody can help you without source.

Answer 2

you can see the multi dimensional array defined as

MyArr={ {1,2,3}, {4}, {5,6,7} }

as

[1] [2] [3]
[4]
[5] [6] [7]

so if you check the content of MyArr[1][0] you're checking the content of the first column (0) of the second row(1), thus 4.

in java a matrix doesn't need to have the same column number per row. that takes the name of jagged matrix

Answer 3

you might want to reformulate the question, It's quite difficult to understand what's the matter right now.

if you go
arr[0][2] = 42;
and then
System. out. print(arr[0][2]) ;
you will get 42

Answer 4

you're welcome :) try to be more complete when asking a question in the first place: you'll get better answers if we can properly understand what is your problem 😁

Answer 5

what do you want know

Answer 6

you'll have to provide more of your code for us to help you

Answer 7

and whats wrong with it ?

Answer 8

think about it as an insert.

Answer 9

thank you❤

Answer 10

sure

Answer 11

i removed it from the code and the code still work and show 4 as result

Answer 12

this is the code...
int[ ][ ] myArr = { {1, 2, 3}, {4}, {5, 6, 7} };
myArr[0][2] = 42;
int x = myArr[1][0];
// 4

Answer 13

i don't understand why they put"myArr[0][2]=42"

Answer 14

i understand this but myArr[0][2] not equal to 42 and i removed it and the code still work