SDE - 1

Approach:

Step 1 : We will first take mod of K by N (K = K % N) because after every N rotation array will become the same as the initial array. 

Step 2 :Now, we will iterate the array from i = 0 to i = N-1 and check, 
If i < K, Print rightmost Kth element (a[N + i -K]). Otherwise, 

Step 3 :Print array after ‘K’ elements (a[i – K]).

Steps:

Step 1: First we want to declare a variable jump that tells about the number of jumps needed.

Step 2 : Accordingly, while the reach that is intialized to X meters is less than height of the wall then in that case we add the left out portion that is X-Y due to slipping and add it to the reach.

Step 3: Incremented the jump variable that is intialized to 1 everytime we follow in the for loop and at last adds up to our variable jumps. 

Step 4: Finally we return the total number of jumps needed.


def calculateTime(X, Y, n, walls):
jumps = 0
for i in range(0, n):
reach = X
jump = 1
while reach < walls[i]:
reach += (X-Y)
jump += 1
jumps += jump
return jumps; 


X = int(input())
Y = int(input())
n = int(input())
walls = list(map(int, input().split(" ")))
print(calculateTime(X, Y, n, walls))

In fibonacci series, next number is the sum of previous two numbers for example 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 etc. The first two numbers of fibonacci series are 0 and 1.

Using Recursion: Since Fibonacci Number is the summation of the two previous numbers. We can use recursion as per the following condition:

Get the number whose Fibonacci series needs to be calculated.
Recursively iterate from value N to 1:
Base case: If the value called recursively is less than 1, the return 1 the function.
Recursive call: If the base case is not met, then recursively call for previous two value as:
recursive_function(N – 1) + recursive_function(N – 2);

Return statement: At each recursive call(except the base case), return the recursive function for the previous two value as:
recursive_function(N – 1) + recursive_function(N – 2);

Tip 1 : Don't Hesitate to clarify any doubt if not been able to understand .
Tip 2 : Speak Confidently and clearly. without any pressure 
Tip 3 : Join the meeting 10-15 mins prior and check if you have a stable internet connection if interview is conducted virtually.