From e7c7065a8d74f61aaf1d22bc4024d9be994ce3eb Mon Sep 17 00:00:00 2001
From: Anthony Debucquoy <debucquoy.anthony@gmail.com>
Date: Wed, 10 May 2023 20:02:10 +0200
Subject: [PATCH] Adding MatrixRemoveRow/Column

---
 .../main/java/school_project/Utils/Array.java | 26 +++++++++++++++
 .../java/school_project/Utils/ArrayTest.java  | 33 +++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/app/src/main/java/school_project/Utils/Array.java b/app/src/main/java/school_project/Utils/Array.java
index 9f722d6..8d2176a 100644
--- a/app/src/main/java/school_project/Utils/Array.java
+++ b/app/src/main/java/school_project/Utils/Array.java
@@ -10,4 +10,30 @@ public class Array{
         }
         return ret;
     }
+
+    public static boolean[][] MatrixRemoveRow(boolean[][] o, int row){
+        boolean[][] newMatrix = new boolean[o.length - 1][o[0].length];
+        int newRow = 0;
+        for (int i = 0; i < o.length; i++) {
+            if(i == row)
+                i++;
+            newMatrix[newRow] = o[i];
+            newRow++;
+        }
+        return newMatrix;
+    }
+
+    public static boolean[][] MatrixRemoveColumn(boolean[][] o, int col){
+        boolean[][] newMatrix = new boolean[o.length][o[0].length - 1];
+        for (int i = 0; i < o.length; i++) {
+            int newCol = 0;
+            for(int j = 0; j < o[0].length; j++){
+                if(j == col)
+                    j++;
+                newMatrix[i][newCol] = o[i][j];
+                newCol++;
+            }
+        }
+        return newMatrix;
+    }
 }
diff --git a/app/src/test/java/school_project/Utils/ArrayTest.java b/app/src/test/java/school_project/Utils/ArrayTest.java
index 70b66b9..14e5285 100644
--- a/app/src/test/java/school_project/Utils/ArrayTest.java
+++ b/app/src/test/java/school_project/Utils/ArrayTest.java
@@ -23,4 +23,37 @@ class ArrayTest {
         a[1][1] = true;
         assertArrayEquals(b, c);
     }
+
+    @Test
+    void matrixRemoveRow() {
+        boolean[][] a = new boolean[][] {
+                {true, false, true},
+                {false, false, false},
+                {true, false, true},
+        };
+        boolean[][] b = new boolean[][] {
+                {true, false, true},
+                {true, false, true},
+        };
+
+        boolean[][] result = Array.MatrixRemoveRow(a, 1);
+        assertArrayEquals(b, result);
+    }
+
+    @Test
+    void matrixRemoveColumn() {
+        boolean[][] a = new boolean[][] {
+                {true, false, true},
+                {false, false, false},
+                {true, false, true},
+        };
+        boolean[][] b = new boolean[][] {
+                {true, true},
+                {false, false},
+                {true, true},
+        };
+
+        boolean[][] result = Array.MatrixRemoveColumn(a, 1);
+        assertArrayEquals(b, result);
+    }
 }
\ No newline at end of file