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knapsack.java

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+//Ankita Patil
+
+class knapsack {
+    int knap(int[] wt, int[] val, int W, int n) {
+        int[][] M = new int[n + 1][W + 1];
+        for (int i = 0; i <= n; i++) {
+            for (int w = 0; w <= W; w++) {
+                if (w == 0 || i == 0)
+                    M[i][w] = 0;
+                else if (wt[i - 1] > w)
+                    M[i][w] = M[i - 1][w];
+                else
+                    M[i][w] = Math.max(M[i - 1][w], val[i - 1] + M[i - 1][w - wt[i - 1]]);
+            }
+        }
+        int i = n, k = W;
+        while (i > 0 && k > 0) {
+            if (M[i][k] != M[i - 1][k]) {
+                System.out.println(i);
+                i = i - 1;
+                k = k - wt[i];
+            } else
+                i = i - 1;
+        }
+        return M[n][W];
+    }
+
+    public static void main(String[] args) {
+        int[] val = new int[] { 10, 4, 9, 11 };
+        int[] wt = new int[] { 3, 5, 6, 2 };
+        int W = 7;
+        int n = val.length;
+        knapsack ob = new knapsack();
+        System.out.println("Maximum value in Knapsack: " + ob.knap(wt, val, W, n));
+    }
+
+}