diff --git a/src/main/java/com/thealgorithms/dynamicprogramming/BitmaskDP.java b/src/main/java/com/thealgorithms/dynamicprogramming/BitmaskDP.java
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+package com.thealgorithms.dynamicprogramming;
+
+import java.util.Arrays;
+
+/**
+ * An implementation of Dynamic Programming using Bitmasks.
+ * Bitmask DP represents a subset of elements as bits in an integer.
+ * If the i-th bit is 1, the i-th element is included in the subset.
+ * This is highly effective for problems where n is small (≤ 20).
+ * This class demonstrates Bitmask DP by solving the Traveling
+ * Salesperson Problem (TSP) - finding the minimum cost to visit all
+ * nodes exactly once and return to the starting node.
+ */
+public final class BitmaskDP {
+
+    private BitmaskDP() {
+        // Prevent instantiation
+    }
+
+    /**
+     * Solves the Traveling Salesperson Problem using Bitmask DP.
+     * @param distance A 2D array where distance[i][j] is the cost to travel from node i to node j.
+     * @return The minimum distance to visit all nodes and return to the start.
+     */
+    public static int tsp(int[][] distance) {
+        int n = distance.length;
+        if (n == 0) {
+            return 0;
+        }
+
+        int totalSubsets = 1 << n;
+
+        // dp[mask][i] = min distance visiting the subset 'mask' and currently ending at node 'i'
+        int[][] dp = new int[totalSubsets][n];
+
+        // Initialize with Integer.MAX_VALUE
+        for (int[] row : dp) {
+            Arrays.fill(row, Integer.MAX_VALUE);
+        }
+
+        // Base case: Start at node 0.
+        dp[1][0] = 0;
+
+        for (int mask = 1; mask < totalSubsets; mask++) {
+            for (int u = 0; u < n; u++) {
+                // Skip if node 'u' is NOT in the current subset,
+                // OR if the current state is unreachable (INT_MAX)
+                if ((mask & (1 << u)) == 0 || dp[mask][u] == Integer.MAX_VALUE) {
+                    continue;
+                }
+
+                for (int v = 0; v < n; v++) {
+                    // If node 'v' IS already in the subset, skip
+                    if ((mask & (1 << v)) != 0) {
+                        continue;
+                    }
+
+                    int nextMask = mask | (1 << v);
+
+                    // Safe to add since we already verified dp[mask][u] is not INT_MAX
+                    dp[nextMask][v] = Math.min(dp[nextMask][v], dp[mask][u] + distance[u][v]);
+                }
+            }
+        }
+
+        // Find the minimum cost to return to the starting node (0) from the last visited node
+        int minCost = Integer.MAX_VALUE;
+        int allVisitedMask = totalSubsets - 1; // All n bits are 1
+
+        for (int i = 1; i < n; i++) {
+            minCost = Math.min(minCost, dp[allVisitedMask][i] + distance[i][0]);
+        }
+
+        return minCost;
+    }
+}
diff --git a/src/main/java/com/thealgorithms/dynamicprogramming/BitmaskDP_README.md b/src/main/java/com/thealgorithms/dynamicprogramming/BitmaskDP_README.md
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+This document provides a detailed, line-by-line breakdown of the Traveling Salesperson Problem (TSP) implementation using Bitmask Dynamic Programming.
+
+Class: BitmaskDP
+
+A utility class containing the algorithm to solve the TSP. It is declared as final with a private constructor to prevent instantiation, adhering to standard Java utility class conventions.
+
+Method: tsp(int[][] distance)
+
+Calculates the minimum cost to visit every node exactly once and return to the starting node.
+
+Parameters
+
+distance (int[][]): An $N \times N$ adjacency matrix representing the graph. distance[u][v] holds the cost/distance to travel from node u to node v.
+
+Returns
+
+int: The minimum total distance required to complete the TSP tour.
+
+Variable Breakdown
+
+n: The total number of nodes (cities) in the graph.
+
+totalSubsets: Calculated as 1 << n (which equals $2^n$). This represents the total number of possible combinations of visited nodes.
+
+dp: A 2D array of size [totalSubsets][n].
+
+mask (row): The current subset of visited nodes represented as an integer bitmask.
+
+i (column): The node the path currently ends on.
+
+dp[mask][i] stores the minimum cost to reach this state.
+
+Step-by-Step Logic
+
+1. Initialization
+
+for (int[] row : dp) {
+    Arrays.fill(row, Integer.MAX_VALUE); 
+}
+
+
+All states in the DP table are initialized to Integer.MAX_VALUE (infinity). This indicates that, initially, all paths are considered unreachable.
+
+2. The Base Case
+
+dp[1][0] = 0;
+
+
+The algorithm assumes node 0 is the starting point.
+
+The binary representation of 1 is ...0001, meaning only the 0-th bit is set (only node 0 has been visited).
+
+The cost to be at node 0 having only visited node 0 is 0.
+
+3. State Transitions (The Core Loop)
+
+The algorithm iterates through every possible mask (from 1 to totalSubsets - 1).
+
+for (int u = 0; u < n; u++) {
+    if ((mask & (1 << u)) == 0 || dp[mask][u] == Integer.MAX_VALUE) continue;
+
+
+For each mask, it checks every node u to see if it acts as a valid "current end node". It skips the iteration if:
+
+Node u is not in the current mask.
+
+The state dp[mask][u] is unreachable (Integer.MAX_VALUE).
+
+for (int v = 0; v < n; v++) {
+    if ((mask & (1 << v)) != 0) continue;
+
+
+It then looks for an unvisited adjacent node v. If v is already included in the mask (meaning the bit is 1), it skips v because the TSP requires visiting nodes exactly once.
+
+int nextMask = mask | (1 << v);
+dp[nextMask][v] = Math.min(dp[nextMask][v], dp[mask][u] + distance[u][v]);
+
+
+If v is unvisited, the algorithm calculates the nextMask by setting the $v$-th bit to 1. It then updates the DP table for nextMask ending at v with the minimum of:
+
+Its current known cost.
+
+The cost of the current state (dp[mask][u]) plus the travel cost from u to v.
+
+4. Calculating the Final Tour Cost
+
+int minCost = Integer.MAX_VALUE;
+int allVisitedMask = totalSubsets - 1; 
+
+for (int i = 1; i < n; i++) {
+    minCost = Math.min(minCost, dp[allVisitedMask][i] + distance[i][0]);
+}
+
+
+After the DP table is fully populated, the algorithm looks at the state where all nodes have been visited (allVisitedMask, where all $N$ bits are 1).
+
+It iterates through every possible ending node i, taking the cost of reaching that node and adding the distance to travel back to the starting node 0 (distance[i][0]). The smallest resulting sum is returned as the final minCost.
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