Existing Itertools used:
izip_longest (* iterables [, fillvalue]) : create an iterator that concatenates elements from each from repeatable elements. If the iterations are of unequal length, the missing values are filled with the padding value. The iteration continues until the longest iteration is exhausted.
- Advanced tools offer the same high performance as the basic toolset .
- Superior memory performance is supported by processing elements one at a time, rather than carrying everything iterated into memory at once.
- Keeping the code small by tying tools together in a functional style that helps eliminate temporary variables .
- High speed is achieved by preferring “vectorized” building blocks over using for loops and generators, which incur interpreter overhead.
Input: str = ABCDEFG, l = 3 Output: ABC DEF Gxx Explaination: Grouping characters of string in set of 3: ABC DEF Gxx. `x` is added to the set which doesn`t have 3 elements in it. Input: str = GEEKSFORGEEKS, l = 5 Output: GEEKS FORGE EKSxx
Below is the Python3 code:
grouper (iterable, n, fillvalue
range < code class = "plain"> (t):
ans [i] code >
"". join (ans [i])
. join (ans)
result code >
grouper (s, k)
ABC DEF Gxx