Split and conquer11/16/2023 It is therefore faster than the classical algorithm, which requires n^2 single-digit products. It is a divide and conquer algorithm which works in O(nlogn) time.ħ - Karatsuba algorithm for fast multiplication: It does multiplication of two n-digit numbers in at most 3n^(log3) single-digit multiplications in general (and exactly n^(log3) when n is a power of 2). Strassen’s algorithm multiplies two matrices in O(n^2.8974) time.Ħ - Cooley–Tukey Fast Fourier Transform (FFT) algorithm is the most common algorithm for FFT. A simple method to multiply two matrices need 3 nested loops and is O(n^3). The Divide and Conquer algorithm solves the problem in O(nLogn) time.ĥ - Strassen’s Algorithm is an efficient algorithm to multiply two matrices. The problem can be solved in O(n^2) time by calculating distances of every pair of points and comparing the distances to find the minimum. The algorithm divides the array in two halves, recursively sorts them and finally merges the two sorted halves.Ĥ - Closest Pair of Points: The problem is to find the closest pair of points in a set of points in x-y plane. Finally, the algorithm recursively sorts the subarrays on left and right of pivot element.ģ - Merge Sort is also a sorting algorithm. The algorithm picks a pivot element, rearranges the array elements in such a way that all elements smaller than the picked pivot element move to left side of pivot, and all greater elements move to right side. Otherwise, if x is less than the middle element, then the algorithm recurs for left side of middle element, else recurs for right side of middle element.Ģ - Quicksort is a sorting algorithm. If the values match, return the index of middle. In each step, the algorithm compares the input element x with the value of the middle element in array. A very popular algorithmic paradigm, a typical Divide and Conquer algorithm solves a problem using following three steps:ĭivide: Break the given problem into subproblems of same type.Ĭonquer: Recursively solve these subproblemsĬombine: Appropriately combine the answersįollowing are some standard algorithms that are Divide and Conquer algorithms:ġ - Binary Search is a searching algorithm.
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