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प्रश्न
Give one reason, why iteration is better than recursion.
उत्तर
Recursion takes more memory and more time to execute than its iterative counterpart.
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संबंधित प्रश्न
If the Fibonacci number is defined recursively as F(n) = `{(0, "n" = 0), (1, "n" = 1), ("F"("n" - 1),+ "F"("n" - 2) "otherwise"):}`
to evaluate F(4), how many times F() is applied?
Using this recursive definition
`"a"^"n" = {(1, "if" "n" = 0), ("a" × "a"^("n" - 1), "otherwise"):}`
how many multiplications are needed to calculate a10?
What is recursive problem-solving?
Define factorial of a natural number recursively.
Power can also be defined recursively as
`"a"^"n" = {(1, "if" "n" = 0), ("a" × "a"^("n" - 1), "if n is odd"), ("a"^("n""/"2) × "a"^("n""/"2), "if n is even"):}`
Construct a recursive algorithm using this definition. How many multiplications are needed to calculate a10?
A single-square-covered board is a board of 2n x 2n squares in which one square is covered with a single square tile. Show that it is possible to cover this board with triominoes without overlap.
Differentiate between direct recursion and indirect recursion.
The following function task() is a part of some class. Assume ‘m’ and ‘n’ are positive integers greater than 0. Answer the questions given below along with dry / run working.
int task(int m, int n)
{ if(m=n)
return m;
else if (m>n)
return task(m-n, n);
else
return task(m, n-m)
}- What will the function task() return when the value of m=30 and n=45?
- What function does task() perform, apart from recursion?
Assertion: Recursion utilises more memory as compared to iteration.
Reason: Time complexity of recursion is higher due to the overhead of maintaining the function call stack.
