|
Size: 1780
Comment:
|
Size: 2520
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 62: | Line 62: |
=== Multidimensional 2-D String Array === In case you need 2-D string arrays this example may help you to start. Cheers! Alfonso Reyes, Houston-Texas {{{#!python from java.lang.reflect import Array import java rows = 3 cols = 3 str2d = java.lang.reflect.Array.newInstance(java.lang.String,[rows, cols]) str2d[0][0] = "python" str2d[1][0] = "jython" str2d[2][0] = "java" str2d[0][1] = "syntax " str2d[1][1] = "strength" str2d[2][1] = "libraries" str2d[0][2] = "unclutter" str2d[1][2] = "combine" str2d[2][2] = "graphics" print str2d print "printing multidimensional array" for i in range(0, len(str2d), 1): for j in range(0, len(str2d[i]), 1): print str2d[i][j]+"\t", }}} |
Core Jython / Python Examples
Examples related to core Jython / Python will be here. Intended for those new to Python / Jython
Print Hello world {{{ print 'Hello World' print "Hello World" }}}
JArray
I was curious on how to work with jarray and move the arrays between classes after being filled with values and operated. I think this example explains some of the basics. Of course, there are more pythonic ways to do this. Cheers! Alfonso Reyes
1 from java.lang import Math
2 from jarray import array, zeros
3 import java.util.Random;
4
5 class ArrayClass:
6 """ This class will fill an array with random numbers
7 and then return the array for further operations
8 """
9 def __init__(self, elems):
10 self.N = elems
11 systemEnergy = 0.0025
12 self.v = zeros(self.N, "d") # array of zeros, double type
13 v0 = Math.sqrt(2.0 * systemEnergy / self.N)
14 for i in range(0, self.N, 1):
15 r = java.util.Random()
16 self.v[i] = v0 * r.nextInt(self.N) # same velocity for all particles
17
18 def out(self):
19 for i in range(0, self.N, 1):
20 print i, self.v[i]
21
22 def get(self):
23 return self.v
24
25 n = 100
26 uarr = zeros(n, "d") # array of double to store some operations
27 ac = ArrayClass(n)
28 ac.out() # print the array
29 arr = ac.get() # get the array to start doing some work on it
30
31 # get a first third of the array members and times 10
32 print "Get a first third of the array members"
33 for i in range(0, n/3, 1):
34 uarr[i] = arr[i] * 10
35 print i, arr[i], uarr[i]
Multidimensional 2-D String Array
In case you need 2-D string arrays this example may help you to start. Cheers! Alfonso Reyes, Houston-Texas
1 from java.lang.reflect import Array
2 import java
3
4 rows = 3
5 cols = 3
6
7 str2d = java.lang.reflect.Array.newInstance(java.lang.String,[rows, cols])
8 str2d[0][0] = "python"
9 str2d[1][0] = "jython"
10 str2d[2][0] = "java"
11
12 str2d[0][1] = "syntax "
13 str2d[1][1] = "strength"
14 str2d[2][1] = "libraries"
15
16 str2d[0][2] = "unclutter"
17 str2d[1][2] = "combine"
18 str2d[2][2] = "graphics"
19
20 print str2d
21
22 print "printing multidimensional array"
23 for i in range(0, len(str2d), 1):
24 for j in range(0, len(str2d[i]), 1):
25 print str2d[i][j]+"\t",
26 print
27 print