Week-3 (Programming Assignment)

k=[]
def contracting(l):
    for i in range(0,len(l)):
        try:
            g=l[i]-l[i+1]
            if g<0:
                g=-g
            k.append(g)
        except: 
            break
    res = all(i > j for i, j in zip(k, k[1:]))
    return res
  
def leftrotate(m):
    q=[]
    for i in range(len(m)):
        s=[]
        for j in range(len(m[i])):
            s.append(m[j][len(m)-1-i])
        q.append(s)
    return(q)
def counthv(l):
    new_list=[]
    hc=[]
    vc=[]
    for k in l: 
        new_list.append(int(k))
    for a in range(1,len(new_list)-1):
        if new_list[a]>new_list[a+1] and new_list[a]>new_list[a-1]:
            hc.append(new_list[a])
        if new_list[a]<new_list[a+1] and new_list[a]<new_list[a-1]:
            vc.append(new_list[a])
    return([len(hc),len(vc)])
import ast

def parse(inp):
  inp = ast.literal_eval(inp)
  return (inp)

fncall = input()
lparen = fncall.find("(")
rparen = fncall.rfind(")")
fname = fncall[:lparen]
farg = fncall[lparen+1:rparen]

if fname == "contracting":
  arg = parse(farg)
  print(contracting(arg))

if fname == "counthv":
  arg = parse(farg)
  print(counthv(arg))

if fname == "leftrotate":
  arg = parse(farg)
  savearg = arg
  ans = leftrotate(arg)
  if savearg == arg:
    print(ans)
  else:
    print("Side effect")