Programming, Data Structures And Algorithms Using Python | Week 2 Programs | Jan-2022 | NPTEL

 Programming, Data Structures And Algorithms Using Python

Week 2  Programming Assignments
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~~~THERE IS SOME INVISIBLE CODE HERE~~~

def threesquares(m):
  if(m<0):
    return(False)
  l=[]
  for i in range(0, int(m**0.5)+1):
    l+=[i*i]
  for i in l:
    for j in l:
      for k in l:
        if(i+j+k==m):
          return (True)
  return(False)



def repfree(s):
  for c in s:
    count=0
    for j in s:
      if(j==c):
        count=count+1
    if (count >= 2):
      return (False)
  return(True)


def hillvalley(l):
    dec = False
    inc = False
    c = 0
    for i in range(len(l)-1):
        if c > 1:
            return False
        right = l[i+1]
        middle = l[i]
        diff = right - middle
        if diff > 0:
            if dec:
                c += 1
            inc = True
            dec = False
        elif diff < 0:
            if inc:
                c += 1
            dec = True
            inc = False
    if c == 1:
        return True
    return False

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Don't forget to indent the code properly.