在Matlab中使用字符串命名数组元素的索引

Question

Array elements:

4  3  2  1  5

a[1]=4
a[2]=3
a[3]=2
a[4]=1
a[5]=5

For Array index 1 corresponds to string name Basavaraj,

index 2 corresponds to string name Chandru,

index 3 corresponds to string name Natesh,

index 4 corresponds to string name Vijay,

index 5 corresponds to string name Raghu,

---

So if array value 4 comes at index at 1 it has to display string Basavaraj,

3 comes at index 2 means string Chandru should be displayed,

2 comes at index 3 means string Natesh should be displayed,

1 comes at index 4 means string Vijay should be displayed,

5 comes at index 5 means string Raghu should be displayed,

Sample of input array values:

4
4
4
3
3
3
1
1
1
2
2
2
5
5
5

output should be according to above array elements:

Basavaraj
Basavaraj
Basavaraj
Chandru
Chandru
Chandru
Vijay
Vijay
Vijay
Natesh
Natesh
Natesh
Raghu
Raghu
Raghu

Sample of input array values:

5
5
5
1
1
1
2
2
2
4
4
4
3
3
3

output should be according to above array elements:

Raghu
Raghu
Raghu
Vijay
Vijay
Vijay
Natesh
Natesh
Natesh
Basavraj
Basavraj
Basavraj
Chandru
Chandru
Chandru

Only 5 values are taken ie 1 2 3 4 5 How it can be done done in matlab?

Alternate explanation: Consider below scenario:

Array:1 5 4 2 3

ind[1]=1--->Basavraj

ind[2]=5--->Chandru

ind[3]=4--->Natesh

ind[4]=2--->Vijay

ind[5]=3--->Raghu

Sample of input array:

2
2
4
4
5
5
1
1
3
3

output:

Vijay
Vijay
Natesh
Natesh
Chandru
Chandru
Basavraj
Basavraj
Raghu
Raghu

Answer 1

You could use sth. like this:

% a is a cell array defined with {} containing each name in one element.
a={'Basavaraj', 'Chandru' ,'Natesh','Vijay','Raghu'};
%b is an array which has integer values from 1 to 5 (10 times) if you add more values in a b still generates random numbers for all elements (because of numel(a))
b= round((numel(a)-1)*rand(10,1)+1);
% this returns for each integer in b the according name from a (be careful to use {} to return the value, normal brackets won't work here
a{b}

I used rand to get a random order in b obviously you should use your vector as stated in your question.

Edit 1 Hey not so sure if this is what you asked (in comment):

List_Of_Names={'Basavaraj', 'Chandru' ,'Natesh','Vijay','Raghu'};
input1 =[1 5 4 2 3];
tmp_List_Names = List_Of_Names(input1);
input2= round((numel(List_Of_Names)-1)*rand(1,10)+1);
result =tmp_List_Names(input2);
display(input2)
display(result)

Here List_Of_Names is the list of your names.
input1 is the first input which defines the new order (idx(1)->5) not sure if this is what you are asking for.
tmp_List_Names is a temporal List which contains your names in the new order.
input2 is that long integer list which defines the output.
result is the output. And at the end I use display() to show input2 and result in the command window. Which would look like this:

input2 =

     3     1     5     5     3     3     2     5     2     1


result = 

    'Vijay'    'Basavaraj'    'Natesh'    'Natesh'    'Vijay'    'Vijay'    'Raghu'    'Natesh'    'Raghu'    'Basavaraj'

If you want them to be in Columns not rows You can either transpose input2 and ( List_Of_Names or result ). Transpose is possible by adding ' :

result=result';