How to turn string into matrix

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convert string into 2d array python
convert string to matrix java

I'd like to turn a string, for example this one: "1,2,3;2,3,4;3,4,5" into a matrix (list inside list). I've tried it using the string.split() function but I can't seem to figure it out. For me the main problem is that there are both ; and , that are messing with my code.

Following logic will give you a list of list from the given input string.

x='1,2,3;2,3,4;3,4,5'
lst= [[int(x) for x in m.split(',')] for m in x.split(';')]

How to convert string to matrix - MATLAB Answers, Direct link to this answer intA = sscanf(A, '%d %d@') % Make string into numerical array. s=reshape(intA, [numel(intA)/2, 2]) % Shape into two column matrix. intA = sscanf(A, '%d %d@') % Make string into numerical array. s=reshape(intA, [numel(intA)/2, 2]) % Shape into two column matrix. Note, none of the methods given are that robust in that they don't check to see that A has an even number of integers.

This is horrible, but it seems to work:

[ [ item for item in row.split(',') ] for row in "1,2,3;2,3,4;3,4,5".split(';') ]

However, I would recommend to write this a as a for loop:

result = []
for row in"1,2,3;2,3,4;3,4,5".split(';'):
  result.append(row.split(','))

how can convert string to matrix? - MATLAB Answers, What you showed in your question "i want a b c b in output" could be achieved by adding space characters into the character vector, or perhaps by using a cell� chr = mat2str(X) converts the numeric matrix X into a character vector that represents the matrix, with up to 15 digits of precision. You can use chr as input to the eval function. For example, A = eval(chr) reproduces the values from the original matrix to the precision specified in chr.

If both comma and semicolon are functionally the same, this is much simpler than looping/splitting twice:

x = "1,2,3;2,3,4;3,4,5"
result = x.replace(";", ",").split(",")

essentially simplify the scenario by making it all commas, then split.

How can I transform a string into a matrix, Worked for me: [[x for x in line] for line in a.split('\n')]. Example: >>> a = """ XXXXXXXXXXXXXXXIXXX X X X XXXXXXXXXXXXXXXXX . str = mat2str(A, n) converts fi object A to a string representation using n bits of precision. str = mat2str( A , 'class') creates a string representation with the name of the class of A included. This option ensures that the result of evaluating str will also contain the class information.

4 Ways to Convert String to Character Array in JavaScript , The separator can be a string or regular expression. Invoke the split method on the string you want to split into array elements. Pass the separator you want to use� Minimum cost to convert 3 X 3 matrix into magic square; Convert given string so that it holds only distinct characters; Python | Convert a list of characters into a string; Convert characters of a string to opposite case; Check if a given string can be formed using characters of adjacent cells of a Matrix; Maximum perimeter of a square in a 2D grid

Convert String to Array with JavaScript's String split Method, You first need to split the string using the semi-colon as the separator,. That will give you a string of numbers for each row. Then split each� Excel VBA Split String into Array. A string is a collection of characters joined together, when these characters are divided and stored in a variable then that variable becomes an array for these characters and the method we use to split a string to make into an array is by using the SPLIT function in vba which splits the string in a one dimensional string.

Convert string into array of matrix, The split() method is used to split a string into an array of substrings, and returns the number of splits, items after the split limit will not be included in the array� In this example, you meant for the result to be 210, which is the decimal representation of the binary string. Unfortunately, because you didn’t specify that behavior, int() assumed that the string was a decimal integer. One good safeguard for this behavior is to always define your string representations using explicit bases: >>>