Created Spiral_Matrix code from leetcode #759
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SrishtiSinha2003
approved these changes
Jun 23, 2025
| int count = 0; | ||
| int row = 0; | ||
| int col = 0; | ||
| boolean right = true; |
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Too many boolean flags for directions
- right, left, up, down, and curr lead to bloated logic and repetitive conditionals.
- This could be replaced by a direction array and an index to keep it clean.
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`public List spiralOrder(int[][] matrix) {
List result = new ArrayList<>();
if (matrix == null || matrix.length == 0) return result;
int top = 0;
int bottom = matrix.length - 1;
int left = 0;
int right = matrix[0].length - 1;
while (top <= bottom && left <= right) {
// move right
for (int i = left; i <= right; i++) {
result.add(matrix[top][i]);
}
top++;
// move down
for (int i = top; i <= bottom; i++) {
result.add(matrix[i][right]);
}
right--;
// move left
if
7A1A
(top <= bottom) {
for (int i = right; i >= left; i--) {
result.add(matrix[bottom][i]);
}
bottom--;
}
// move up
if (left <= right) {
for (int i = bottom; i >= top; i--) {
result.add(matrix[i][left]);
}
left++;
}
}
return result;
}
}`
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