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A nested list is a list within a list. Python provides features to handle nested list gracefully and apply common functions to manipulate the nested lists. In this article we will see how to use list comprehension to create and use nested lists in python.Creating a MatrixCreating a matrix involves creating series of rows and columns. We can use for loop for creating the matrix rows and columns by putting one python list with for loop inside another python list with for loop.Example Live Demomatrix = [[m for m in range(4)] for n in range(3)] print(matrix)Running the above code gives us ... Read More
We have usually seen the print command in python printing one line of output. But if we have multiple lines to print, then in this approach multiple print commands need to be written. This can be avoided by using another technique involving the three single quotes as seen below.Example Live Demoprint(''' Motivational Quote : Sometimes later becomes never, Do it now. Great things never come from comfort zones. The harder you work for something, the greater you'll feel when you achieve it. ''') Running the above code gives us the following result:Motivational Quote : Sometimes later becomes never, Do ... Read More
A contingency table is a table showing the distribution of one variable in rows and another variable in columns. It is used to study the correlation between the two variables. It is a multiway table which describes a dataset in which each observation belongs to one category for each of several variables. Also It is basically a tally of counts between two or more categorical variables. Contingency tables are also called crosstabs or two-way tables, used in statistics to summarize the relationship between several categorical variables.The contingency coefficient is a coefficient of association which tells whether two variables or datasets ... Read More
The IntlChar isgraph()function checks that the entered value is a graphic character or not.Syntaxbool IntlChar::isgraph (val)Parametersval − An integer or character encoded as a UTF-8 string.ReturnThe IntlChar isgraph() function returns TRUE of val is a graphic character.ExampleThe following is an example −OutputThe following is the output −bool(true) bool(false) bool(false) bool(true)
The IntlChar isMirrored()function is used to check whether the entered value contains Bidi_Mirrored property or not.Syntaxbool IntlChar::isMirrored (val)Parametersval − An integer or character encoded as a UTF-8 string.ReturnThe IntlChar isMirrored()function returns TRUE if the entered value has the Bidi_Mirrored propertyExampleThe following is an example −OutputThe following is the output −bool(true) bool(true) bool(false) bool(false)
Suppose we have an array A[] with n positive elements. We have to create another array B, such that B[i] is XOR of all elements of A[] except A[i]. So if the A = [2, 1, 5, 9], then B = [13, 14, 10, 6]To solve this, at first we have to find the XOR of all elements of A, and store it into variable x, then for each element of A[i], find B[i] = x XOR A[i]Example Live Demo#include using namespace std; void findXOR(int A[], int n) { int x = 0; for (int i = 0; ... Read More
TheIntlChar::isblank() function checks whether the entered value isblank or horizontal space character.SyntaxIntlChar::isblank (val)Parametersval − An integer or character encoded as a UTF-8 string.ReturnThe IntlChar::isblank() function returns TRUE if the entered value isblank or horizontal space character.ExampleThe following is an example −OutputThe following is the output −bool(true) NULL bool(false) bool(false)
The IntlChar::islower() function check whether the given input character is a lowercase character or not.Syntaxbool IntlChar::islower(val)Parametersval − A character encoded as a UTF-8 string.ReturnThe IntlChar::islower() function returns TRUE if the entered value is a lowercase character.ExampleThe following is an example −OutputThe following is the output −bool(true) bool(false)
Suppose we have an array A[], with n elements. We have to find another array B[], whose size is n+1, such that GCD of B[i] and B[i + 1] is A[i]. If there are multiple solutions, then print one of them whose array sum is minimum. So if A = [1, 2, 3], then output will be [1, 2, 6, 3]When A has only one element say K, then B = [K, K]. So the B[0] will be A[0]. Now consider we are done up to index i, so we have already processed index i, and calculated B[i + 1]. ... Read More
Suppose we have an array A[], with n elements. We have to construct the binary tree from the array in level order traversal. So the elements from the left in the array will be filled in the tree level-wise starting from level 0. So if the array is like A = [1, 2, 3, 4, 5, 6], then the tree will be like below:If we see closer, we can find that when the parent is present at index i, then its two children will be at index (2i + 1), and (2i + 2). Thus we can insert left and ... Read More