Create 1574. Shortest Subarray to be Removed to Make Array Sorted

1574. Shortest Subarray to be Removed to Make Array Sorted

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+class Solution {
+public:
+    int findLengthOfShortestSubarray(vector<int>& arr) {
+       //find first ans last decreasing pair
+        int first=-1;
+        int last=-1;
+        int n=arr.size();
+        for(int i=0;i<n-1;i++){
+            if(arr[i]>arr[i+1]){
+                if(first==-1){
+                    first=i;
+                }
+                last=i;
+            }
+        }
+            if (first == -1) {
+            return 0;
+        }
+// now find the max len of non decreasing array that does not has these pair
+
+        int ans=min(last+1,n-first-1);
+        for(int i=0;i<=first;i++){
+            for(int j=last+1;j<n;j++){
+                if(arr[i]<=arr[j]){
+                    ans=min(ans,j-i-1);
+                    break;
+                }
+            }
+        }
+ return ans;
+    }
+};
+
+