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Finding a sting - function findstr:
The function findstr receives two strings as input arguments. It finds all the occurrences of shorter string contained by the longer, and returns the subscripts of the starting of the occurrences. The order of strings does not matter with findstr; it always finds the shorter string within the longer, whichever it is. The shorter string can consist of one character, or any of the number of characters. If there is more than one occurrence of the shorter string within the longer one, the findstr returns a vector with all the indices. Note that, what is returned is the index of the starting of the shorter string.
>> findstr('abcde', 'd')
ans =
4
>> findstr('d','abcde')
>> findstr('abcde', 'bc')
2
>> findstr('abcdeabcdedd', 'd')
4 9 11 12
Example of Plotting from a Function: For illustration, the function can be called as shown below: >> y = [1:2:9].^3 y = 1 27 125 343 729
Matrix operations: There are some common operations on matrices. The operators which are applied term by term, implying that the matrices should be of similar size, sometimes
Illustration of Sorting strings: To sort on the rows rather than second dimension should be specified. >> sort(words,2) ans = Hello Hdowy Hi Gbdeo
Basic mathematical operations: All the basic mathematical operations can be executed on symbolic expressions and variables (example, add, raise to a power, multiply, subtract,
Cross Product: The cross or outer product a × b of two vectors a and b is defined only whenever both a and b are the vectors in three-dimensional space, that means that they b
Changing Case: The MATLAB has two functions which convert strings to all uppercase letters, or all lowercase, known as the upper and lower. >> mystring = 'AbCDEfgh';
Replacement : Replace a row by adding it to (or subtract from it) a multiple of the other row. For a given row ri, this is written as ri - srj → ri Note that when r
Illustration of gauss-jordan: Here's an illustration of performing such substitutions by using MATLAB >> a = [1 3 0; 2 1 3; 4 2 3] a = 1 3 0 2 1 3 4 2
Intersect function and setdiff function: The intersect function rather than returns all the values which can be found in both of the input argument vectors. >> intersect(v
Removing Whitespace Characters: The MATLAB has functions which will eliminate trailing blanks from the end of a string and/or leading blanks from the starting of a string.
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