docs: update the whole repository

* fix some bugs
* delete duplicate files
* format code

DynamicProgramming/KadaneAlgorithm.java

@@ -0,0 +1,55 @@
+package DynamicProgramming;
+
+import java.util.Scanner;
+
+/**
+ * Program to implement Kadane’s Algorithm to
+ * calculate maximum contiguous subarray sum of an array
+ * Time Complexity: O(n)
+ *
+ * @author Nishita Aggarwal
+ */
+
+public class KadaneAlgorithm {
+
+    /**
+     * This method implements Kadane's Algorithm
+     *
+     * @param arr The input array
+     * @return The maximum contiguous subarray sum of the array
+     */
+    static int largestContiguousSum(int arr[]) {
+        int i, len = arr.length, cursum = 0, maxsum = Integer.MIN_VALUE;
+        if (len == 0)    //empty array
+            return 0;
+        for (i = 0; i < len; i++) {
+            cursum += arr[i];
+            if (cursum > maxsum) {
+                maxsum = cursum;
+            }
+            if (cursum <= 0) {
+                cursum = 0;
+            }
+        }
+        return maxsum;
+    }
+
+    /**
+     * Main method
+     *
+     * @param args Command line arguments
+     */
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int n, arr[], i;
+        n = sc.nextInt();
+        arr = new int[n];
+        for (i = 0; i < n; i++) {
+            arr[i] = sc.nextInt();
+        }
+        int maxContSum = largestContiguousSum(arr);
+        System.out.println(maxContSum);
+        sc.close();
+    }
+
+}