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Explain multi dimentional arrays in java?
So far all these arrays have been one-dimensional. That is, a single number could locate any value in the array. Therefore sometimes data is naturally represented through more than one number. For example a position on the earth needs latitude and a longitude.
The most general type of multidimensional array is the two-dimensional array. If you think of a one-dimensional array as a column of values, you can think of a two-dimensional array as a table of values such this
c0
c1
c2
c3
r0
0
1
2
3
r1
4
r2
5
r3
6
r4
7
Here we have an array along with five rows and four columns. It has twenty total elements. Therefore we say it has dimension five through four, not dimension twenty. This array is not the similar as a four by five array like this one:
c4
We need to use two numbers to identify a position in a two-dimensional array. These are the element's row and column positions. For example if the above array is known as J then J[0][0] is 0, J[0][1] is 1, J[0][2] is 2, J[0][3] is 3, J[1][0] is 1, and so on.
J
J[0][0]
J[0][1]
J[0][2]
J[0][3]
J[1][0]
Here's how the elements in a four through five array known as M are referred to:
M
M[0][0]
M[0][1]
M[0][2]
M[0][3]
M[0][4]
M[1][0]
M[1][1]
M[1][2]
M[1][3]
M[1][4]
M[2][0]
M[2][1]
M[2][2]
M[2][3]
M[2][4]
M[3][0]
M[3][1]
M[3][2]
M[3][3]
M[3][4]
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