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What is time complexity and space complexity?


Asked by Shepherd Arroyo on Dec 13, 2021 FAQ



Time and space complexity basically gives us an estimate that how much time and space the program will take during its execution. The space complexity determines how much space will it take in the primary memory during execution and the time complexity determines the time that will be needed for successful completion of the program execution.
Also Know,
Time and space complexity basically gives us an estimate that how much time and space the program will take during its execution. The space complexity determines how much space will it take in the primary memory during execution and the time complexity determines the time that will be needed for successful completion of the program execution.
Just so, Time complexity is commonly estimated by counting the number of elementary operations performed by the algorithm , supposing that each elementary operation takes a fixed amount of time to perform. When analyzing the time complexity of an algorithm we may find three cases: best-case, average-case and worst-case.
Consequently,
Big O notation is the most common metric for calculating time complexity. It describes the execution time of a task in relation to the number of steps required to complete it. Big O notation is written in the form of O (n) where O stands for "order of magnitude" and n represents what we're comparing the complexity of a task against.
Accordingly,
O (1) or Constant time complexity : Constant time complexity means - Time taken to execute a particular set of code is independent of size of input.In other words, We can represent a constant upper bound to how long the program will take to run which isn't affected by any of the input parameters.