LarryKarani

#NB used python3
#2 Create a simple calculator
def eval_helper(expression, index=0):
    result=0
    op='+'
    while index < len(expression):
        char=expression[index]
        if char.isdigit():
            if op == '+':
                result += int(char)

LarryKarani

#NB used python 3
# 3 Maximum In A stack

class MaxStack:
    def __init__(self):
        self.elements = []
        self.maximums = []
        
    def push(self, val):
        self.elements.append(val)

LarryKarani

# 4  Add two numbers as a linked list

class ListNode(object):
    def __init__(self, x):
        self.val = x
        self.next = None
        
class Solution(object):
    def addTwoNumbers(self, l1, l2):
        result = ListNode(0)

LarryKarani

# 5 Number of ways to Climb Stairs
def fib(n): 
    if n <= 1: 
        return n 
    return fib(n-1) + fib(n-2) 
  
def staircase(n): 
    return fib(n + 1) 

print(staircase(5))

LarryKarani

def isMagicSquare( mat) : 
      
    # calculate the sum of  
    # the prime diagonal 
    s = 0
    for i in range(0, N) : 
        s = s + mat[i][i] 
    # the secondary diagonal 
    s2 = 0
    for i in range(0, N) : 

LarryKarani

Description Explain what you have changed, and why.

How can This be tested

• Clone the repo
• Setup project according to Readme.md
• checkout to branch ``

Type of change

LarryKarani

import memoize from "lodash.meoize";

const MyFunction = (age) => {
  return `Your are ${age} years old!`
}

const MyMemoizedFunction = memoize(MyFunction)