강의로 돌아가기

### 테스트 7번만 실패하네요

어디가 잘못된건지 알수 있을까요?

``````function setCharAt(str,index,chr){
return str.substr(0,index) + chr + str.substr(index+1);
}

function detectAndDestroy (board, count) {
if(board.length < 2)
return 0

let newCount = 0;
let destroy = {}
for(let y = 0; y < board.length - 1; y ++) {
for(let x = 0; x < board.length - 1; x ++) {
if(board[y].charAt(x) != '#') {
if(board[y].charAt(x) == board[y].charAt(x+1) &&
board[y].charAt(x) == board[y+1].charAt(x) &&
board[y].charAt(x) == board[y+1].charAt(x+1)) {
destroy[y + "_" + x] = [y,x]
destroy[y + "_" + (x+1)] = [y,x + 1]
destroy[(y+1) + "_" + x] = [y + 1,x]
destroy[(y+1) + "_" + (x+1)] = [y+ 1,x + 1]
}
}
}
}

for(let key in destroy) {
let tile = destroy[key]
board[tile[0]] = setCharAt(board[tile[0]], tile[1], '#')
count ++
newCount ++
}

board = moveDown(board);
if(newCount > 0)
return detectAndDestroy(board, count);

return count;
}

function moveDown (board) {
for(let y = board.length - 1; y > 0; y --) {
for(let x = 0; x < board.length; x ++) {
if(board[y].charAt(x) == '#') {
let j = y - 1
while(j > -1) {
if(board[j].charAt(x) != '#')
break;
j --
}
if(j > -1) {
board[y] = setCharAt(board[y], x, board[j].charAt(x))
board[j] = setCharAt(board[j], x, '#')
}
}
}
}
return board;
}

function solution(m, n, board) {

}
``````
###### 작성중인 코드―solution.js
``````1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
function setCharAt(str,index,chr){
return str.substr(0,index) + chr + str.substr(index+1);
}

function detectAndDestroy (board, count) {
if(board.length < 2)
return 0

let newCount = 0;
let destroy = {}
for(let y = 0; y < board.length - 1; y ++) {
for(let x = 0; x < board.length - 1; x ++) {
if(board[y].charAt(x) != '#') {
if(board[y].charAt(x) == board[y].charAt(x+1) &&
board[y].charAt(x) == board[y+1].charAt(x) &&
board[y].charAt(x) == board[y+1].charAt(x+1)) {
destroy[y + "_" + x] = [y,x]
destroy[y + "_" + (x+1)] = [y,x + 1]
destroy[(y+1) + "_" + x] = [y + 1,x]
destroy[(y+1) + "_" + (x+1)] = [y+ 1,x + 1]
}
}
}
}

for(let key in destroy) {
let tile = destroy[key]
board[tile[0]] = setCharAt(board[tile[0]], tile[1], '#')
count ++
newCount ++
}

board = moveDown(board);
if(newCount > 0)
return detectAndDestroy(board, count);

return count;
}

function moveDown (board) {
for(let y = board.length - 1; y > 0; y --) {
for(let x = 0; x < board.length; x ++) {
if(board[y].charAt(x) == '#') {
let j = y - 1
while(j > -1) {
if(board[j].charAt(x) != '#')
break;
j --
}
if(j > -1) {
board[y] = setCharAt(board[y], x, board[j].charAt(x))
board[j] = setCharAt(board[j], x, '#')
}
}
}
}
return board;
}

function solution(m, n, board) {

}
``````