Review questions for Prelim 2 ----------------------------- 1. allInterval function B = allInterval(x,a,b) % x is a length-n vector. % B is assigned the value of 1 (true) if every x-value is in the % interval [a,b]. % B is assigned the value of 0 (false) if at least one of the x-values % is not in the interval [a,b]. % Your implementation should make effective use of a while-loop. 2. TotalValue % Refer to the Cost-Inventory application in Lecture 14. % Complete the following function... function T = totalValue(Inv,Cost) % T is the total value of all the inventory in all the factories 3. Censoring text % Refer to Lec 18 on characters and strings and implement the function % censor WITHOUT "pre-building" the string of 'X's. That is, replace the % censored word one character at a time. function D = censor(str, A) % Replace all occurrences of string str in character matrix A, regardless % of case, with 'X's. % A is a matrix of characters. % str is a string. Assume that str is never split across two lines in A. % D is A with 'X's replacing the censored string str. % % Example: A = ['Use MATLAB '; ... % 'in that lab.'] % % and str = 'lab' % % Then D = ['Use MATXXX '; ... % 'in that XXX.'] 4. TwoClicks % Refer to Lecture 13 and the function RandomLinks(n). A = RandomLinks(1000); % Note that if A(i,j) is one, then there is a link on webpage j % to webpage i. Write a fragment that prints "yes" if it is % possible to go from web page #100 to webpage #200 in one or two clicks. % Thus, if A(101,100) = 1 and A(200,101) = 1 then "yes". 5. Checking for numbers in a vector/matrix function B = vecHasNegAndPos(x) % x is a length-n vector and n>=2 % B is assigned the value of 1 (true) if x has at least one component % that is strictly negative and at least one component that is % strictly positive. % Otherise B should be assigned the value of 0. % Your implementation should make effective use of a while-loop. function B = matHasNegAndPos(A) % A is an m-by-n real array with M>=2 and n>=2 % B is assigned the value of 1 (true) if A has at least one component % that has a strictly negative value and at least one component that has a % strictly positive value. % Otherise B should be assigned the value of 0. % Your implemention should make effective use of VecHasNegAndPos 6. Reduce function B = Reduce(A) % A is an n-by-n array with n odd and at least 3 in value. % B is obtained by deleting all the even-indexed rows and columns. % Thus if % A = [ 1 2 3 4 5 ;... % 6 7 8 9 10 ;... % 11 12 13 14 15 ;... % 16 17 18 19 20 ;... % 21 22 23 24 25 ] % then % B = [ 1 3 5;... % 11 13 15;... % 21 23 25] 7. Longest function [len, ind] = longest(C) % Find the longest string(s) in cell array C. % C is an n-by-1 cell array of strings, n>=1. % len is the length of the longest string in C. % ind is a vector, possibly of length one, containing the index number(s) % of the string(s) with length len 8. Questions from "Insight": M7.1.3 P8.1.5 (Clarification: y is a row vector that is the left shift of x) P8.1.8 P9.1.4 (do not use function deblank) P9.1.7 (do not use built-in functions strfind, findstr, or find) P9.1.9 (count lower case letters only) P9.2.5