The algorithm will have both a constant time complexity and a constant space complexity: O(1)
time complexity is 2^57..and space complexity is 2^(n+1).
Time complexity and space complexity.
"Running Time" is essentially a synonym of "Time Complexity", although the latter is the more technical term. "Running Time" is confusing, since it sounds like it could mean "the time something takes to run", whereas Time Complexity unambiguously refers to the relationship between the time and the size of the input.
Complexity is a measure of how long an algorithm is expected to take and/or how much space is required to complete the task. It is not specific to C++ -- the language is immaterial -- it only applies to algorithms. Complexity is often expressed in big O notation, where O(1) is constant time (the best that can be expected of any algorithm).
The algorithm will have both a constant time complexity and a constant space complexity: O(1)
time complexity is 2^57..and space complexity is 2^(n+1).
Time complexity and space complexity.
Time complexity and space complexity. More specifically, how well an algorithm will scale when given larger inputs.
The complexity of an algorithm is the function which gives the running time and/or space in terms of the input size.
"Running Time" is essentially a synonym of "Time Complexity", although the latter is the more technical term. "Running Time" is confusing, since it sounds like it could mean "the time something takes to run", whereas Time Complexity unambiguously refers to the relationship between the time and the size of the input.
Complexity is a measure of how long an algorithm is expected to take and/or how much space is required to complete the task. It is not specific to C++ -- the language is immaterial -- it only applies to algorithms. Complexity is often expressed in big O notation, where O(1) is constant time (the best that can be expected of any algorithm).
Calculate the amount of additional memory used by the algorithm relative to the number of its inputs. Typically the number of inputs is defined by a container object or data sequence of some type, such as an array. If the amount of memory consumed remains the same regardless of the number of inputs, then the space complexity is constant, denoted O(1) in Big-Omega notation (Big-O). If the amount of memory consumed increases linearly as n increases, then the space complexity is O(n). For example, the algorithm that sums a data sequence has O(1) space complexity because the number of inputs does not affect the amount of additional memory consumed by the accumulator. However, the algorithm which copies a data sequence of n elements has a space complexity of O(n) because the algorithm must allocate n elements to store the copy. Other commonly used complexities include O(n*n) to denote quadratic complexity and O(log n) to denote (binary) logarithmic complexity. Combinations of the two are also permitted, such as O(n log n).
BASIC DIFFERENCES BETWEEN SPACE COMPLEXITY AND TIME COMPLEXITY SPACE COMPLEXITY: The space complexity of an algorithm is the amount of memory it requires to run to completion. the space needed by a program contains the following components: 1) Instruction space: -stores the executable version of programs and is generally fixed. 2) Data space: It contains: a) Space required by constants and simple variables.Its space is fixed. b) Space needed by fixed size stucture variables such as array and structures. c) dynamically allocated space.This space is usually variable. 3) enviorntal stack: -Needed to stores information required to reinvoke suspended processes or functions. the following data is saved on the stack - return address. -value of all local variables -value of all formal parameters in the function.. TIME COMPLEXITY: The time complexity of an algorithm is the amount of time it needs to run to completion. namely space To measure the time complexity we can count all operations performed in an algorithm and if we know the time taken for each operation then we can easily compute the total time taken by the algorithm.This time varies from system to system. Our intention is to estimate execution time of an algorithm irrespective of the computer on which it will be used. Hence identify the key operation and count such operation performed till the program completes its execution. The time complexity can be expressd as a function of a key operation performed. The space and time complexity is usually expressed in the form of function f(n),where n is the input size for a given instance of a problem being solved. f(n) helps us to predict the rate of growthof complexity that will increase as size of input to the problem increases. f(1) also helps us to predict complexity of two or more algorithms in order ro find which is more efficient.
Merge sort (or mergesort) is an algorithm. Algorithms do not have running times since running times are determined by the algorithm's performance/complexity, the programming language used to implement the algorithm and the hardware the implementation is executed upon. When we speak of algorithm running times we are actually referring to the algorithm's performance/complexity, which is typically notated using Big O notation. Mergesort has a worst, best and average case performance of O(n log n). The natural variant which exploits already-sorted runs has a best case performance of O(n). The worst case space complexity is O(n) auxiliary.
Analysis of an algorithm means prediction of how fast the algorithm works based on the problem size. It is necesary to analyze an algorithm so that, if we have n no Of algorithms then the fastest and 1 with less time & space complexity can selected. Which will allow and ensure maximum utilization of available resourses.
A priori analysis of an algorithm refers to its time and space complexity analysis using mathematical (algebraic) methods or using a theoritical model such as a finite state machine. (In short, analysis prior to running on real machine.) A posteriori analysis of an algorithm refers to the statistical analysis of its space and time complexity after it is actualy run on a practical machine. (in short, anaysis of its statistics after running it on a real machine)