e to find the cubic spline interpolant without using the built in spline( ) function

In Phython Language: The DNA of a living organism consists of a string of 4 different bases represented with letters A, T, G, C. The DNA has a double helix structure which means these bases are paired in the string. An A base is always paired with a T base molecule and a C base is always paired with G molecule. Write a function matchingPair that accepts a single strand of the DNA structure as a string parameter and produces the pairing strand as a result and returns it. Strings can be considered as list of characters. Therefore the subscript notation that we use for lists is acceptable for strings as well. For example to reach to the 4th character of a string variable mystring, you may use the notation mystring[3].  Write another function search that accepts a long and a short DNA strand as parameters. The function should return the index positions of the occurrences of the short strand in the long strand as a list. Test your functions by accepting a long strand of DNA to find the…

Note: Please Answer in C++ only Chef and his little brother are playing with sticks. They have total N sticks. Length of ith stick is Ai. Chef asks his brother to choose any four sticks and to make a rectangle with those sticks its sides. Chef warns his brother to not to break any of the sticks, he has to use sticks as a whole. Also, he wants that the rectangle formed should have the maximum possible area among all the rectangles that Chef's brother can make. Chef's little brother takes this challenge up and overcomes it. Can you also do so? That is, you have to tell whether it is even possible to create a rectangle? If yes, then you have to tell the maximum possible area of rectangle. Input Output 1 5 12312

Assignment: Create a surface and contour plot of function z=f(x,y) [-5,5] by [-5,51. Take a pick to plot from any of the choices below. (01) f(x,y) = x*y**3-y*x**3 (02) f(x,y) = (x**2+3*y**2) *exp(-x**2-y**2) (03) f(x, y) = -1/(x**2+y**2) (04) f(x, y) = cos(abs(x)+abs(y)) - Use at least 500 points in each direction to discretize domain and create the grid. - Make the surface plot red and without grid lines. - For contour plot, specify contour levels to go from minimum and maximum Z values on the entire domain and include at least 15 contour levels. - Pick a colormap you like I ## Create data import numpy as np import pyvista as pv