Minimum number of jumps.cpp

DP/Minimum number of jumps.cpp

@@ -0,0 +1,38 @@
+#include<bits/stdc++.h>
+using namespace std;
+int jumping(int A[],int n){
+    if(n==0 || A[0]==0){
+        return -1;
+    }
+    int jump[n];
+	    jump[0]=0;
+	    for(int i=1;i<n;i++){
+	        jump[i]=INT_MAX;
+	        for(int j=0;j<i;j++){
+	            if(i<=j+A[j]){
+	               jump[i]=min(jump[i],jump[j]+1);
+	                }
+	        }
+	    }
+	    if(jump[n-1]==INT_MAX){
+	        return -1;
+	    }
+	    else{
+	        return jump[n-1];
+	    }
+}
+int main(){
+	int t;
+	cin>>t;
+	while(t--){
+	    int n;
+	    cin>>n;
+	    int A[n];
+	    for(int i=0;i<n;i++){
+	        cin>>A[i];
+	    }
+	   int l=jumping(A,n);
+	   cout<<l<<endl;
+	}
+	return 0;
+}