diff --git a/data/progress.txt b/data/progress.txt
index 90645d2f..e7c25b4d 100644
--- a/data/progress.txt
+++ b/data/progress.txt
@@ -1,3 +1,4 @@
+20240520: 73
 20240519: 207,79,206,213,198
 20240518: 212(todo),211,338,208(again)
 20240517: 347,253(todo),91(todo),217
diff --git a/data/to_review.txt b/data/to_review.txt
index 49cc38e9..f90b8c97 100644
--- a/data/to_review.txt
+++ b/data/to_review.txt
@@ -1,3 +1,4 @@
+2024-07-14 -> ['73']
 2024-07-13 -> ['207,79,206,213,198']
 2024-07-12 -> ['212(todo),211,338,208(again)']
 2024-07-11 -> ['347,253(todo),91(todo),217']
@@ -8,6 +9,7 @@
 2024-07-06 -> ['371']
 2024-07-05 -> ['121,252']
 2024-07-04 -> ['125']
+2024-06-23 -> ['73']
 2024-06-22 -> ['207,79,206,213,198']
 2024-06-21 -> ['212(todo),211,338,208(again)']
 2024-06-20 -> ['347,253(todo),91(todo),217']
@@ -18,6 +20,7 @@
 2024-06-15 -> ['371']
 2024-06-14 -> ['121,252']
 2024-06-13 -> ['125']
+2024-06-10 -> ['73']
 2024-06-09 -> ['207,79,206,213,198']
 2024-06-08 -> ['212(todo),211,338,208(again)']
 2024-06-07 -> ['347,253(todo),91(todo),217']
@@ -25,19 +28,19 @@
 2024-06-05 -> ['104,230,102,100']
 2024-06-04 -> ['105,106']
 2024-06-03 -> ['242,235']
-2024-06-02 -> ['371']
+2024-06-02 -> ['73', '371']
 2024-06-01 -> ['207,79,206,213,198', '121,252']
 2024-05-31 -> ['212(todo),211,338,208(again)', '125']
 2024-05-30 -> ['347,253(todo),91(todo),217']
 2024-05-29 -> ['226,98,253(todo)']
-2024-05-28 -> ['104,230,102,100']
+2024-05-28 -> ['73', '104,230,102,100']
 2024-05-27 -> ['207,79,206,213,198', '105,106']
 2024-05-26 -> ['212(todo),211,338,208(again)', '242,235']
-2024-05-25 -> ['347,253(todo),91(todo),217', '371']
+2024-05-25 -> ['73', '347,253(todo),91(todo),217', '371']
 2024-05-24 -> ['207,79,206,213,198', '226,98,253(todo)', '121,252']
-2024-05-23 -> ['212(todo),211,338,208(again)', '104,230,102,100', '125']
-2024-05-22 -> ['207,79,206,213,198', '347,253(todo),91(todo),217', '105,106']
-2024-05-21 -> ['207,79,206,213,198', '212(todo),211,338,208(again)', '226,98,253(todo)', '242,235']
+2024-05-23 -> ['73', '212(todo),211,338,208(again)', '104,230,102,100', '125']
+2024-05-22 -> ['73', '207,79,206,213,198', '347,253(todo),91(todo),217', '105,106']
+2024-05-21 -> ['73', '207,79,206,213,198', '212(todo),211,338,208(again)', '226,98,253(todo)', '242,235']
 2024-05-20 -> ['207,79,206,213,198', '212(todo),211,338,208(again)', '347,253(todo),91(todo),217', '104,230,102,100', '371']
 2024-05-19 -> ['212(todo),211,338,208(again)', '347,253(todo),91(todo),217', '226,98,253(todo)', '105,106', '121,252']
 2024-05-18 -> ['347,253(todo),91(todo),217', '226,98,253(todo)', '104,230,102,100', '242,235', '125']
diff --git a/leetcode_java/src/main/java/LeetCodeJava/Array/SetMatrixZeroes.java b/leetcode_java/src/main/java/LeetCodeJava/Array/SetMatrixZeroes.java
index 0f325451..22d07e86 100644
--- a/leetcode_java/src/main/java/LeetCodeJava/Array/SetMatrixZeroes.java
+++ b/leetcode_java/src/main/java/LeetCodeJava/Array/SetMatrixZeroes.java
@@ -2,14 +2,52 @@
 
 // https://leetcode.com/problems/set-matrix-zeroes/description/
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class SetMatrixZeroes {
 
     // V0
     // IDEA : ARRAY OP
-    // TODO: implement below
     // https://github.com/yennanliu/CS_basics/blob/master/leetcode_python/Array/set-matrix-zeroes.py
     public void setZeroes(int[][] matrix) {
 
+        if (matrix.length == 0 && matrix[0].length == 0){
+            return;
+        }
+
+        int l = matrix.length;
+        int w = matrix[0].length;
+
+        // get zero
+        List<int[]> collected = new ArrayList<>();
+        for (int i = 0; i < w; i++){
+            for (int j = 0; j < l; j++){
+                if(matrix[j][i] == 0){
+                    collected.add(new int[]{i, j});
+                }
+            }
+        }
+
+        //System.out.println("collected = " + collected);
+        for (int[] point : collected){
+
+            //System.out.println("x = " + point[0] + " y = " + point[1]);
+            int x = point[0];
+            int y = point[1];
+
+            // make x - direction as zero
+            for (int i = 0; i < w; i++){
+                matrix[y][i] = 0;
+            }
+
+            // make y - direction as zero
+            for (int j = 0; j < l; j++){
+                matrix[j][x] = 0;
+            }
+        }
+
+        return;
     }
 
     // V1
diff --git a/leetcode_java/src/main/java/dev/workspace3.java b/leetcode_java/src/main/java/dev/workspace3.java
index 92f84041..e3238724 100644
--- a/leetcode_java/src/main/java/dev/workspace3.java
+++ b/leetcode_java/src/main/java/dev/workspace3.java
@@ -1085,4 +1085,45 @@ public int rob_2(int[] nums) {
         return dp[nums.length-1];
     }
 
+    // LC 73
+    public void setZeroes(int[][] matrix) {
+
+        if (matrix.length == 0 && matrix[0].length == 0){
+            return;
+        }
+
+        int l = matrix.length;
+        int w = matrix[0].length;
+
+        // get zero
+        List<int[]> collected = new ArrayList<>();
+        for (int i = 0; i < w; i++){
+            for (int j = 0; j < l; j++){
+                if(matrix[j][i] == 0){
+                    collected.add(new int[]{i, j});
+                }
+            }
+        }
+
+        //System.out.println("collected = " + collected);
+        for (int[] point : collected){
+
+            System.out.println("x = " + point[0] + " y = " + point[1]);
+            int x = point[0];
+            int y = point[1];
+
+            // make x - direction as zero
+            for (int i = 0; i < w; i++){
+                matrix[y][i] = 0;
+            }
+
+            // make y - direction as zero
+            for (int j = 0; j < l; j++){
+                matrix[j][x] = 0;
+            }
+        }
+
+        return;
+    }
+
 }