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SpiralMatrix.java
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48 lines (45 loc) · 1.53 KB
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public class SpiralMatrix {
public static void printSpiral(int matrix[][]){
int startRow=0;
int startCol=0;
int endRow=matrix.length-1;
int endCol=matrix[0].length-1;
while(startRow<=endRow && startCol<=endCol){
//top
for(int j=startCol;j<=endCol;j++){
System.out.print(matrix[startRow][j]+" ");
}
//right
for(int i=startRow+1;i<=endRow;i++){
System.out.print(matrix[i][endCol]+" ");
}
//buttom
for(int j=endCol-1;j>=startCol;j--){
if(startRow==endRow){
break;
}
System.out.print(matrix[endRow][j]+" ");
}
//left
for(int i=endRow-1;i>=startRow+1;i--){
if(startCol==endCol){
break;
}
System.out.print(matrix[i][startCol]+" ");
}
startCol++;
startRow++;
endCol--;
endRow--;
}
System.out.println();
}
public static void main(String[]args){
int matrix[][]={{1,2,3,4,},
{5,6,7,8},
{9,10,11,12},
{13,14,15,16}
};
printSpiral(matrix);
}
}