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scherniak
 4 years ago
How can i reverse both full diagonal rows(top left to bottom right and top right to bottom left) of a 2d array? (in java)
eg
21 26 31 36
41 46 51 56
61 66 71 76
81 86 91 96
to:
96 26 31 81
41 71 66 56
61 51 46 76
36 86 91 21
scherniak
 4 years ago
How can i reverse both full diagonal rows(top left to bottom right and top right to bottom left) of a 2d array? (in java) eg 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96 to: 96 26 31 81 41 71 66 56 61 51 46 76 36 86 91 21

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Narsat
 4 years ago
Best ResponseYou've already chosen the best response.1The other algorithm didn't work?

scherniak
 4 years ago
Best ResponseYou've already chosen the best response.0only reversed the corners, not the full diagonal row

Narsat
 4 years ago
Best ResponseYou've already chosen the best response.1Hmm, it works fine for me, testing it out with your values and differentsized arrays.

scherniak
 4 years ago
Best ResponseYou've already chosen the best response.0hmmmmm, weird sorry. do you mind posting it again? (im on a different computer)

Narsat
 4 years ago
Best ResponseYou've already chosen the best response.1Sure, code is: /** * Method that inverts diagonals * * @param array */ public static void reverseDiagonals(int array[][]){ for(int i = 0; i < array.length / 2; i++){ // We only need to go through half the array int j = array[0].length  1; // This variable will work the array backwards int temp = array[i][i]; // This will keep temporary value array[i][i] = array[j  i][j  i]; array[j  i][j  i] = temp; temp = array[i][j  i]; array[i][j  i] = array[j  i][i]; array[j  i][i] = temp; } }

scherniak
 4 years ago
Best ResponseYou've already chosen the best response.0thank you so much, very much appreciated (works of course)
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