将1D数组转换为2D数组而不重复

Question

I am attempting to convert a 1D array into a 2D array([5][5]) without it using duplicate characters. I can't seem to get it to be consistent, sometimes it works and sometimes it doesn't.

Input: billys

Output: [[b, i, l, y, ], [ , , , , ], [ , , , , ], [ , , , , ], [ , , , , ]]

Obviously missing the 's' but has correctly removed one of the 'l's

Input: billysb

output: [[b, i, l, y, s], [ , , , , ], [ , , , , ], [ , , , , ], [ , , , , ]]

Again, correctly removed the duplicate letters.

Input: billysabc

output: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 9

Input: bbbbbbb

Ouput: [[b, b, b, , ], [ , , , , ], [ , , , , ], [ , , , , ], [ , , , , ]]

Removing some, but not all duplicates.

here's the code doing the conversion for me:

 char[][] playFairGrid = new char[5][5]; //write keyword to array char[] keywordBreakdown = keyword.toCharArray(); //write keyword to grid for(int i =0; i<5;i++){ for(int j=0;j<5;j++){ if (count==keywordBreakdown.length-1) break; //check for duplicates for(int m =0; m<5;m++){ for(int l=0;l<5;l++){ if (keywordBreakdown[count]==playFairGrid[m][l]){ count++; } } } playFairGrid[i][j]=keywordBreakdown[count]; count++; } } System.out.println(Arrays.deepToString(playFairGrid)); 

all help greatly appreciated! this has been a pain for a few hours now.

Answer 1

如果要创建没有重复项的集合，则应使用Set Collection