Change int to bool, rename function and tests

Author: Hardvan

src/main/java/com/thealgorithms/backtracking/MColoring.java

@@ -33,9 +33,9 @@ private MColoring() {
      * @param nodes List of nodes representing the graph.
      * @param n     The total number of nodes in the graph.
      * @param m     The maximum number of allowed colors.
-     * @return 1 if the graph can be colored using M colors, otherwise 0.
+     * @return true if the graph can be colored using M colors, false otherwise.
      */
-    static int possiblePaint(ArrayList<Node> nodes, int n, int m) {
+    static boolean isColoringPossible(ArrayList<Node> nodes, int n, int m) {
 
         // Visited array keeps track of whether each node has been processed.
         ArrayList<Integer> visited = new ArrayList<Integer>();

src/test/java/com/thealgorithms/backtracking/MColoringTest.java

@@ -16,7 +16,7 @@ void testGraphColoring1() {
         int[][] graph = {{0, 1, 1, 1}, {1, 0, 1, 0}, {1, 1, 0, 1}, {1, 0, 1, 0}};
         int m = 3; // Number of colors
 
-        assertEquals(1, MColoring.possiblePaint(createGraph(graph), n, m));
+        assertEquals(true, MColoring.isColoringPossible(createGraph(graph), n, m));
     }
 
     @Test
@@ -25,7 +25,7 @@ void testGraphColoring2() {
         int[][] graph = {{0, 1, 1, 1, 0}, {1, 0, 0, 1, 0}, {1, 0, 0, 1, 1}, {1, 1, 1, 0, 1}, {0, 0, 1, 1, 0}};
         int m = 2; // Number of colors
 
-        assertEquals(0, MColoring.possiblePaint(createGraph(graph), n, m));
+        assertEquals(false, MColoring.isColoringPossible(createGraph(graph), n, m));
     }
 
     @Test
@@ -34,7 +34,7 @@ void testGraphColoring3() {
         int[][] graph = {{0, 1, 1}, {1, 0, 1}, {1, 1, 0}};
         int m = 2; // Number of colors
 
-        assertEquals(0, MColoring.possiblePaint(createGraph(graph), n, m));
+        assertEquals(false, MColoring.isColoringPossible(createGraph(graph), n, m));
     }
 
     private ArrayList<Node> createGraph(int[][] graph) {