|
1 | 1 | classSolution { |
2 | | -publicintequalPairs(int[][]grid) { |
3 | | -Map<String,Integer>map =newHashMap<>(); |
4 | | -introws =grid.length; |
5 | | -intcols =grid[0].length; |
6 | | -for (inti =0;i <rows;i++) { |
7 | | -StringBuildersb =newStringBuilder(); |
8 | | -for (intj =0;j <cols;j++) { |
9 | | -sb.append(grid[i][j]).append("|"); |
10 | | - } |
11 | | -Stringkey =sb.toString(); |
12 | | -map.put(key,map.getOrDefault(key,0) +1); |
| 2 | +publicintequalPairs(int[][]grid) { |
| 3 | +Map<String,Integer>rowMap =newHashMap<>(); |
| 4 | +for (int[]value :grid) { |
| 5 | +StringBuildersb =newStringBuilder(); |
| 6 | +for (intj =0;j <grid[0].length;j++) { |
| 7 | +sb.append(value[j]).append("|"); |
| 8 | + } |
| 9 | +Stringkey =sb.toString(); |
| 10 | +rowMap.put(key,rowMap.getOrDefault(key,0) +1); |
| 11 | + } |
| 12 | +intcount =0; |
| 13 | +for (inti =0;i <grid[0].length;i++) { |
| 14 | +StringBuildersb =newStringBuilder(); |
| 15 | +for (int[]ints :grid) { |
| 16 | +sb.append(ints[i]).append("|"); |
| 17 | + } |
| 18 | +Stringkey =sb.toString(); |
| 19 | +count +=rowMap.getOrDefault(key,0); |
| 20 | + } |
| 21 | +returncount; |
13 | 22 | } |
14 | | -intcount =0; |
15 | | -for (inti =0;i <cols;i++) { |
16 | | -StringBuildersb =newStringBuilder(); |
17 | | -for (intj =0;j <rows;j++) { |
18 | | -sb.append(grid[j][i]).append("|"); |
19 | | - } |
20 | | -Stringkey =sb.toString(); |
21 | | -count +=map.getOrDefault(key,0); |
22 | | - } |
23 | | -returncount; |
24 | | - } |
25 | 23 | } |