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Copy pathArray_multi.java
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140 lines (126 loc) · 4.38 KB
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/*
author: Jaydatt Patel
Array multi dimension Declaration and access.
Stntax:
<data_type> <variable_name>[][];
<data_type> []<variable_name>[];
<data_type>[][] <variable_name>;
*/
class Array_multi {
//generic print function for multidimension array for Integer,Double,String
public static <T> void print_list(T[][] list)
{
System.out.print("\nElements"+": ");
for(T row[] : list)
{
System.out.print("\n");
for(T cell : row)
System.out.print(cell+", ");
}
}
public static class myclass
{
int id;
String name;
myclass(){};
myclass(int a, String b)
{
id = a;
name = b;
}
}
public static void main(String args[])
{
int int_list[][] = new int[4][5];
int q = 0;
//get data of array by length of array
for(int row = 0; row < int_list.length; row++)
{
q += 10;
for(int col = 0; col < int_list[row].length; col++)
int_list[row][col] = q+col;
}
//print the data of array by length of array
System.out.print("\n\nint_list[][]: ");
for(int row = 0; row < int_list.length; row++)
{
System.out.print("\n");
for(int col = 0; col < int_list[row].length; col++)
System.out.print(" "+int_list[row][col]);
}
//declare flexible multidimension array method-1.
Integer int_list1[][] = new Integer[3][];
int_list1[0] = new Integer[2];
int_list1[1] = new Integer[5];
int_list1[2] = new Integer[3];
q = 0;
for(int row = 0; row < int_list1.length; row++)
{
q += 100;
for(int col = 0; col < int_list1[row].length; col++)
int_list1[row][col] = q+col;
}
System.out.print("\n\nint_list1[][]: ");
print_list(int_list1);
//declare flexible multidimension array method-2.
Integer arrRef[] = {31,32,33,34};
Integer int_list2[][] = {
{1,2,3},
{11,12,13,14,15,16},
{21,22},
arrRef,
null};
int_list2[4] = new Integer[] {51,52,53};
System.out.print("\n\nint_list2[][]: ");
print_list(int_list2);
Double d_list[][] = new Double[3][];
d_list[0] = new Double[2];
d_list[1] = new Double[5];
d_list[2] = new Double[3];
q = 0;
for(int row = 0; row < d_list.length; row++)
{
q += 10.0;
for(int col = 0; col < d_list[row].length; col++)
d_list[row][col] = (double)q + (double)col;
}
System.out.print("\n\nd_list[][]: ");
print_list(d_list);
String arrRefstr[] = {"a4","b4","c4","d4"};
String str_list[][] = {
{"a1","b1","c1"},
{"a2","b2","c2","d2","e2","f2"},
{"a3","b3"},
arrRefstr,
null};
str_list[4] = new String[]{"a5","b5","c5"};
System.out.print("\n\nstr_list[][]: ");
print_list(str_list);
myclass mc_list[][] = new myclass[4][];
mc_list[0] = new myclass[2];
mc_list[1] = new myclass[4];
mc_list[2] = new myclass[5];
mc_list[3] = new myclass[3];
q = 0;
for(int row = 0; row < mc_list.length; row++)
{
q += 100;
for(int col = 0; col < mc_list[row].length; col++)
{
mc_list[row][col] = new myclass();
mc_list[row][col].id = q+col;
mc_list[row][col].name = ("Name"+ (q+col));
}
}
System.out.print("\n\nmc_list[][]: ");
for(int row = 0; row < mc_list.length; row++)
{
System.out.print("\n");
for(int col = 0; col < mc_list[row].length; col++)
{
System.out.print("(id: "+mc_list[row][col].id + ", " +
"name: "+mc_list[row][col].name +"), ");
}
}
}
}