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Author: vishnuthumpudi

house_robber.java

@@ -0,0 +1,13 @@
+class Solution {
+    public int rob(int[] nums) {
+        int rob = 0;
+        int norob = 0;
+        for (int i = 0; i < nums.length; i ++) {
+            int newRob = norob + nums[i];
+            int newNoRob = Math.max(norob, rob);
+            rob = newRob;
+            norob = newNoRob;
+        }
+        return Math.max(rob, norob);
+    }
+}

set_mismatch.java

@@ -0,0 +1,25 @@
+class Solution {
+    public int[] findErrorNums(int[] nums) {
+     int x[] = new int[nums.length+1];
+
+     for(int i:nums){
+         x[i]++;
+     }
+
+     int dup=0 , miss=0;
+
+     for(int i=1;i<x.length;i++){
+         if(x[i]==2){
+             dup=i;
+         }
+         if(x[i] ==0){
+             miss=i;
+         }
+     }
+
+return new int[]{dup,miss};
+      
+        
+    }
+}
+}