how to sort a two dimensional char array (only column wise) by selection sort in java

Question

im very new in java i need the whole sorting algorithm....i can find ways to sort a 1 D array but a 2 D array gets very confusing.PLEASE help

sorry i dont have a code yet, i dont know where to start from! (this is the code for a one D array:) but i need one of 2 D (only column wise selection sort)

public static void sort(Comparable[] table) { 
int n = table.length; 
for (int fill=0; fill < n-1; fill++) { 


int posMin = fill; 
for(int next=fill; next < n; next++) { 
if(table[next].compareTo(table[posMin] < 0) {
posMin = next; 

} 
} 
//Exchange table[fill] and table[posMin] 
Comparable temp = table[fill]; 
table[fill] = table[posMin]; 
table[posMin] = temp; 


} 

Answer 1

从注释中听起来，您可以将每一列视为一维数组，因此可以将现有的一维解决方案应用于每一列：无论您引用table [x]，现在都可以引用table [x] [c] ，其中c是要排序的列（或table [c] [x]；不确定用于列的索引）。

Answer 2

If you have each DNA sequence be a string, you have a List of Strings . Then just sort the strings.

List<String> dnaSequences = new ArrayList<String>();
dnaSequences.add("AGCAGAAGCGGAGCTTTAAGATGAATATAAATC");
...
dnaSequences.add("AGCAGAAGCGGAGCTTTAAGATGAATATAAATC");
Collections.sort(dnaSequences);