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anujgaud 2024-03-16 23:49:41 +05:30 committed by GitHub
parent 576925e862
commit 9d0024b926
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core-java-modules/core-java-arrays-operations-advanced-2/src/main/java/com/baeldung/matrixtozero/SetMatrixToZero.java
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@ -33,6 +33,7 @@ public class SetMatrixToZero{
} }
} }
} }
static void setZeroesExtraSpace(int[][] matrix) { static void setZeroesExtraSpace(int[][] matrix) {
int rows = matrix.length; int rows = matrix.length;
int cols = matrix[0].length; int cols = matrix[0].length;
@ -48,17 +49,20 @@ public class SetMatrixToZero{
} }
} }
} }
for(int row: rowSet){ for(int row: rowSet){
for(int j = 0; j < cols; j++){ for(int j = 0; j < cols; j++){
matrix[row][j] = 0; matrix[row][j] = 0;
} }
} }
for(int col: colSet) { for(int col: colSet) {
for(int i = 0; i < rows; i++){ for(int i = 0; i < rows; i++){
matrix[i][col] = 0; matrix[i][col] = 0;
} }
} }
} }
static void setZeroesOptimized(int[][] matrix){ static void setZeroesOptimized(int[][] matrix){
int rows = matrix.length; int rows = matrix.length;
int cols = matrix[0].length; int cols = matrix[0].length;
@ -79,6 +83,7 @@ public class SetMatrixToZero{
break; break;
} }
} }
for(int i = 1; i < rows; i++){ for(int i = 1; i < rows; i++){
for(int j = 1; j < cols; j++){ for(int j = 1; j < cols; j++){
if (matrix[i][j] == 0){ if (matrix[i][j] == 0){
@ -87,6 +92,7 @@ public class SetMatrixToZero{
} }
} }
} }
for(int i = 1; i < rows; i++){ for(int i = 1; i < rows; i++){
if(matrix[i][0] == 0){ if(matrix[i][0] == 0){
for(int j = 1; j < cols; j++){ for(int j = 1; j < cols; j++){
@ -94,6 +100,7 @@ public class SetMatrixToZero{
} }
} }
} }
for(int j = 1; j < cols; j++){ for(int j = 1; j < cols; j++){
if(matrix[0][j] == 0) { if(matrix[0][j] == 0) {
for(int i = 1; i < rows; i++){ for(int i = 1; i < rows; i++){
@ -101,11 +108,13 @@ public class SetMatrixToZero{
} }
} }
} }
if(firstRowZero){ if(firstRowZero){
for(int j = 0; j < cols; j++){ for(int j = 0; j < cols; j++){
matrix[0][j] = 0; matrix[0][j] = 0;
} }
} }
if(firstColZero){ if(firstColZero){
for(int i = 0; i < rows; i++){ for(int i = 0; i < rows; i++){
matrix[i][0] = 0; matrix[i][0] = 0;