HackerRank - Number Line Jumps | Kangaroo | Full Solution with Visuals | Study Algorithms

Thank you for this video Sir.
Just in first if operator it will be
if(v1 <= v2)
return "NO"

Just so you know, u have all the code correct except for a little mistake in the first if operator in your code. It should be <= because input might depict v2=v1

Easy explanations, Thank you for your effort. I subscribed Nikhil!

how (4,5,2,3) works can any one explain.. whether kangaro jumping backward

relative velocity is also a way

bro its not working in python
here is my code:
x1,v1,x2,v2=map(int,input().split())
if(v1 < v2):
print("NO")
if((x2-x1)%(v1-v2)==0):
print("YES")
else:
print("NO")

if(v2 >= v1){
return "NO";
}

if((x2-x1)%(v1-v2) == 0){
return "YES";
}else{
return "NO";
}

velocity should not be equal check this

👍

what to do when you are stuck ??

Thanks for the easy explanation, but there is a situation where this code will not function.
given these parameters: (43 2 70 2)
The answer should be "NO", but your code return "YES"
MY ANSWER BASED ON YOUR SOLUTION IS:
- The first if statement should be like this: if(v1<= v2): return "NO"
The rest is fine.

Thank you sir!!
One of the greatest explanation given by any teacher.

we had to put a if case for v2>v1, meaning the formula would work if V2>v1, giving an integer, but why does this scenario bypass the formula ?

solution is wrong if v1==v2 the denominator becomes 0 it will raise an error

I was able to crack only problem is based on the number of jumps should match not that one will stay and other will it reach just with multiple jumps

Good job man!

one error in this solution,instead of only applying if(v1<v2) we should apply (v1<=v2 ) because kangaroo 1 is always behind kangaroo 2 and cant meet even if v1==v2 and can also cause divided by zero exception according to solution

if(v1<=v2) return "NO";
instead of if(v1<v2)
Test case: 43 2 70 2 to test

we know that kangaroo2 starting position is higher so if v2 >= v1 then its obvs "NO"

but j is already an int type just like all other variables then obviously the division will have truncated value not like 3.54 or 6.7

Wow......what a clear explanation. Thanks

Good explanation, bro. Thank you

thankyou sir for the explanation.. i was worried that i am not able to understand a simple problem.. but now i get it.. BTW you look alike Techno Gamerz xD

love your explanation! keep it up!

I tried this and it failed several test cases

Why that formula gives a remainder of zero then only we reach at our amswer

please try to speak a little louder

what if v1 = v2 then formula won't work

Your method is very useful and easily understood.