The problem statement:

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k.

So then if the following are true then return true:

nums[i] - nums[j] <=t and

i-j<=k

Then [4,2], 1,1 should be true:

2-4<=1 check

1-0<=1 check

return true;

So then you have to assume what they're asking for is:

abs(nums[i] - nums[j]) <=t and

abs(i-j)<=k

but then I propose the question of why offer a possible scenario of t<0.

Either way, this problem is not correct as written.