How To Reverse An Array In JAVA | FREE DSA Course in JAVA | Lecture 63

We are covering simple java operations on arrays.

In this program, we will learn how to reverse an array.

For example, we have an array, 1, 5, 6, 79, 80, 60, 23 then we must reverse the array in the sense that it now becomes 23, 60, 80, 79, 6, 5, 1

We can solve this program using loops by placing one pointer at the start of the array and another pointer at the end of the array.

All we need to do now is interchange their positions and increase the initial pointer by one and decrease the last pointer by one.

Let's check out how we can write a java program to reverse an array.

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[manishachanda]

We don't need to swap we can also do these by:
for(i=A.length; i>=0;i--){
sout(A[i]);
It will take just 10 lines and also save our time.

[mayureshwar]

Great video sir. This is very good video and please make on video on DSA topic as well.

[Nirajjha]

amazing explanation sir....!
this is the your first video that I'm watching... and I love it.

[MokshithPatel]

thank you for this simplest explanation ever :)

[mrb]

int j = last element of array a[i] solved my problem, thanks a lot sir

[prashantbaghel]

what was the time & space complexity of this code ????

[romeiyu]

this is really easy to understand thank you!

[bhuvaneshd]

Sir can you cover dynamic programming and make a playlist ?

[-Dev]

Why is easier questions being posted today ?

[vineethyadav]

we can do the same thing by using for(int i=a.length-1;i>=0;i--)
Sysout(a[i]+" ");
Why do wee need to create aethod and them calling using while??

[annu]

why don't you teach on board that will be easy for us to understand and i personally like more beacuse it's to irritating when u tell the concept on virtual mode. I hope u will consider my request