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73-setmatrixzero.java
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65 lines (59 loc) · 1.5 KB
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class Solution {
public void setZeroes(int[][] matrix) {
int row=matrix.length;
int col=matrix[0].length;
int count=0;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
if(matrix[i][j]!=0)
{
count++;
}
}
}
if(count==row*col)
{
return;
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
if(matrix[i][j]==0)
{
for(int f=i-1;f>=0;f--)
{
if(matrix[f][j]!=0)
matrix[f][j]=-1;
}
for(int f=i+1;f<row;f++)
{
if(matrix[f][j]!=0)
matrix[f][j]=-1;
}
for(int f=j-1;f>=0;f--)
{if(matrix[i][f]!=0)
matrix[i][f]=-1;
}
for(int f=j+1;f<col;f++)
{ if(matrix[i][f]!=0)
matrix[i][f]=-1;
}
}
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
if(matrix[i][j]==-1)
{
matrix[i][j]=0;
}
}
}
return;
}
}