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Combinatorial Python permutation

Permutation and Combination in Python

Python provide direct methods to find permutations and combinations of a sequence. These methods are present in itertools package. Permutation First import itertools...
Digital Electronics & Logic Design GATE CS

Combinational circuits using Decoder

Prerequisite- Binary Decoder, Multiplexers A Decoder is a combinational circuit that converts binary information from input lines to unique output lines. Apart fro...
Difference Between Digital Electronics & Logic Design GATE CS

Difference between combinational and sequential circuit

Prerequisite – Combinational circuits using Decoder, Introduction of Sequential Circuits Combinational circuits are defined as the time independent circuits wh...
Backtracking Combinatorial Recursion

Combinational Sum

Given an array of positive integers arr[] and a sum x, find all unique combinations in arr[] where the sum is equal to x. The same repeated number may be chosen from ...
Backtracking Backtracking

Combinations where every element appears twice and distance between appearances is equal to the value

Given a positive number n, we need to find all the combinations of 2*n elements such that every element from 1 to n appears exactly twice and distance between its app...
Combinatorial Dynamic Programming Dynamic Programming

Sum of products of all combination taken (1 to n) at a time

Given N, we have to find the sum of products of all combination taken 1 to N at a time. In simple words, we have to find the sum of products of all combination taken ...
Dynamic Programming Strings LCS

Shortest possible combination of two strings

Compute the shortest string for a combination of two given strings such that the new string consist of both the strings as its subsequences. Examples : Input : a = &q...
Dynamic Programming Dynamic Programming

Find all combinations of k-bit numbers with n bits set where 1 <= n <= k in sorted order

Given a number k, find all the possible combinations of k-bit numbers with n-bits set where 1 &lt;= n &lt;= k. The solution should print all numbers with one set bit ...
Mathematical Recursion Mathematical

Print all possible combinations of r elements in a given array of size n

Given an array of size n, generate and print all possible combinations of r elements in array. For example, if input array is {1, 2, 3, 4} and r is 2, then output s...
Mathematical Parentheses-Problems Mathematical

Print all combinations of balanced parentheses

Write a function to generate all possible n pairs of balanced parentheses. Examples: Input : n=1 Output: {} Input : n=2 Output: {}{} {{}} Algorithm: Keep track of...

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