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Page 1211 of 2109
How to create bin frequency table in R?
The bin frequency table is the table that represent the frequency for a range of values in a particular variable, in R we generally store these variables in a vector or a column of an R data frame. If we want to create a bin frequency table then table function with cut and breaks function can be used.Example1> x1 x1Output[1] 3 4 3 4 3 3 2 5 2 2 4 4 5 4 5 2 5 2 3 2 4 4 3 3 5 2 2 2 2 3 2 4 3 3 3 5 4 [38] 4 3 ...
Read MoreHow to find the union of two vectors in R?
The union of vectors return all the unique values in both the vectors. For example, if we have a vector x that contains 1, 2, 3, 4, 2, 3, 4, 1, 1, 4 and another vector that contains 2, 1, 2, 4, 5, 7, 5, 1, 2, 3, 7, 6, 5, 7, 4, 2, 4, 1, 5, 8, 1, 3 then the union of these two vectors will be 1, 2, 3, 4, 5, 6, 7, 8. In R, we can do this by using union function.Example> x1 x1Output[1] 2 2 0 1 1 1 4 1 2 2Example> y1 ...
Read MoreProgram to find trailing zeros in factorial of n in C++?
Suppose we have a number n, we have to find the number of trailing zeros of n!.So, if the input is like n = 20, then the output will be 4, as 20! = 2432902008176640000To solve this, we will follow these stepsset count := 0for i := 5, (n/i) > 1, update i := i * 5, docount := count + (n /i)return countLet us see the following implementation to get better understandingExample#include #include #define MAX 20 using namespace std; int countTrailingZeros(int n) { int count = 0; for (int i = 5; n / i >= 1; i *= 5) count += n / i; return count; } main() { int n = 20; cout
Read MoreHow to generate the permutation of x values in y positions with fixed row sums in R?
To generate a permutation of x values in y positions, we can use expand.grid function. For example, if we want to generate three columns for the range of values 0 to 5 then it can be done in R by using the below command −x
Read MoreHow to create stacked barplot using barplot function in R?
To create a stacked barplot using barplot function we need to use matrix instead of a data frame object because in R barplot function can be used for a vector or for a matrix only. We must be very careful if we want to create a stacked bar plot using barplot function because bar plots are created for count data only. Here, you will see some examples of count as well as continuous data, carefully read the graphs and understand how the graphs are different from each other.Example1M1
Read MoreHow to extract the model equation from model object in R?
To extract the model equation model object, we can use the model object name with dollar sign and call function. For example, if we have a model object name Model then the model equation can be extracted by using Model$call. This will directly present the equation that was used to create the model.Example1x1
Read MoreHow to create multiple lines chart with unique line types in R?
Line types can be very different and they are helpful to differentiate among different variables. Mostly, it is used to plot trend data so that the trend for different variables can be visualized with a unique line. In R, we can use matplot function to create such type of multiple lines chart.Example1M1
Read MoreSquirrel Simulation in C++
There's a tree, a squirrel, and several nuts. Positions are represented by the cells in a 2D grid. Your goal is to find the minimal distance for the squirrel to collect all the nuts and put them under the tree one by one. The squirrel can only take at most one nut at one time and can move in four directions - up, down, left, and right, to the adjacent cell. The distance is represented by the number of moves.So, if the input is like Height: 5 Width: 7 Tree position: [2, 2] Squirrel: [4, 4] Nuts: [[3, 0], [2, ...
Read MoreMinimum Factorization in C++
Suppose we have a positive integer x, we have to find the smallest positive integer b whose multiplication of each digit equals to x. If we have no such answer then return 0.So, if the input is like 48, then the output will be 68To solve this, we will follow these steps −ret := 0, mul := 1if a < 2, then:return afor initialize i := 9, when i >= 2, update (decrease i by 1), do −while a mod i is same as 0, do −ret := i * mul + retmul := mul * 10a := a / ...
Read MoreFind the Derangement of An Array in C++
Suppose we have an array consisting of n numbers from 1 to n in increasing order, we have to find the number of derangements it can generate.We know that in combinatorial mathematics, a derangement is a permutation of the elements of a set, such that no element will appear in its original position. The answer may be very large, so return the output mod 10^9 + 7.So, if the input is like 3, then the output will be 2, as the original array is [1, 2, 3]. The two derangements are [2, 3, 1] and [3, 1, 2].To solve this, ...
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