Round 1 (Tech Utsav)

def rotLeft(a, d):

d %= len(a)

return a[d:] + a[:d]

The input is:

a = [1, 2, 3, 4, 5]

d = 2

• [3, 4, 5, 1, 2]

• [1, 2, 3, 4, 5]

• [4, 5, 1, 2, 3]

• [5, 1, 2, 3, 4]

The tolerance bands: gold; silver; brown, represent:

• 10%, 5%, 1%

• 5%, 10%, 2%

• 5%, 10%, 1%

• 10%,   5%,   2%

def calculate(n):

result = [ ]

for i in range(1, n + 1):

if i % 2 == 0:

result.append(i ** 2)

else:

result.append(i ** 3)

return result

n = 5

output = calculate(n)

print(output)

Input is :

n =5

• [1, 4, 9, 16, 25]

• [1, 2, 3, 4, 5]

• [1, 4, 27, 16, 125]

• [1, 8, 27, 64, 125]

Name the three leads of a common transistor

• Collector Bias Omitter

• Emitter Collector Bias

• Base Collector Case

• Collector Base Emitter

Which of the following is a type of error associated with digital-to-analog converters (DACs)?

• nonmonotonic error

• incorrect output codes

• offset error

• nonmonotonic and offset error

def is_full_of_colors(seq):

red, green, yellow, blue = 0, 0, 0, 0

for i, c in enumerate(seq):

if c == 'R': red += 1

elif c == 'G': green += 1

elif c == 'Y': yellow += 1

elif c == 'B': blue += 1

if abs(red - green) > 1 or abs(yellow - blue) > 1: return False

return red == green and yellow == blue

T = int(input())

for _ in range(T):

print(is_full_of_colors(input().strip()))

The inputs are :

T = 3

Test Cases:

1. "RGRGRB"

2. "RGBY"

3. "RRGGBB"

• True

  True

  False

• False

  True

  True

• True

  False

  False

• True

  False

  True

Guess the next number

230 460 46 92 9.2 .......

• 18.4

• 18

• 18.2

• 20.4

def highestValuePalindrome(s, n, k):

s, changes = list(s), [0] * n

for l, r in zip(range(n // 2), range(n - 1, n // 2 - 1, -1)):

if s[l] != s[r]:

if k == 0: return "-1"

s[l] = s[r] = max(s[l], s[r])

k, changes[l] = k - 1, 1

for l, r in zip(range(n // 2), range(n - 1, n // 2 - 1, -1)):

if k <= 0: break

if s[l] != '9':

if changes[l]: k -= 1

elif k >= 2: k -= 2

s[l] = s[r] = '9'

if k > 0 and n % 2: s[n // 2] = '9'

return "".join(s)

The inputs are:
s = "3943"

n = 4

k = 1

• 3943

• -1

• 9999

• 3993

What is the symbol for an inductor in a circuit diagram?

• A straight line

• A zig-zag line

• A series of loops or coils

• A triangle

def countSwaps(a):

numSwaps = 0

n = len(a)

for i in range(n):

for j in range(n - 1):

if a[j] > a[j + 1]:

a[j], a[j + 1] = a[j + 1], a[j]

numSwaps += 1

print(f"Array is sorted in {numSwaps} swaps.")

print(f"First Element: {a[0]}")

print(f"Last Element: {a[-1]}")

The inputs are:
a = [3, 2, 1]

• Array is sorted in 3 swaps.

  First Element: 1

  Last Element: 2

• Array is sorted in 2 swaps.

  First Element: 1

  Last Element: 3

• Array is sorted in 3 swaps.

  First Element: 1

  Last Element: 3

• Array is sorted in 1 swap.

  First Element: 1

  Last Element: 3