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Q1
You have a list of lists. You want to compute the sum of all even numbers greater than 3. Consider the two code snippets below, with the condition left blank. Which conditions, when filled in the blanks in both snippets, will give the correct result?
Snippet 1
```
s = 0
for row in data:
for val in row:
____:
s += val
print(s)
```
Snippet 2
```
s = 0
i = 0
while i < len(data):
j = 0
while ____:
if data[i][j] % 2 == 0 and data[i][j] > 3:
s += data[i][j]
j += 1
i += 1
print(s)
```
Single correct
Q2
What is the value of `out1` after executing the code?
Comprehension
Q3
What is the value of `out2` after executing the code?
Comprehension
Q4
What is the value of `output` after executing the given code snippet?
Comprehension
Q5
In the given code, if we change the condition to `if element % 2 == 0` at line 7, then what is the value of `output` after executing it?
Comprehension
Q6
What is the first line of the output?
Comprehension
Q7
What is the second line of the output?
Comprehension
Q8
What is the output of the following snippet of code?
```
P = [[1, 2], [4, 3]]
Q = [[4, 1], [9, 3]]
R = []
for i in range(2):
row = []
for j in range(2):
if P[i][j] - Q[i][j] > 0:
row.append(1)
elif P[i][j] == Q[i][j]:
row.append(0)
else:
row.append(-1)
R.append(row)
print(R)
```
Single correct
Q9
What is the output of the following snippet of code?
```
p = 1
M = [[1, 3, 4], [2, -1, 3], [-2, 1, 2]]
m = len(M)
n = len(M[0])
for i in range(m):
for j in range(n):
p = p * M[i][j]
print(p)
```
Integer answer
Q10
Select all matrices, represented as lists of lists `M`, for which the above snippet of code prints `True` to the console.
```
# Look at the options for the value of M
n = len(M)
flag = True
for i in range(n):
for j in range(n):
if (i != j) and (M[i][j] != 0):
flag = False
break
elif (i == j) and (M[i][j] != 1):
flag = False
break
if flag == False:
break
print(flag)
```
Multiple correct
Q11
Select all matrices `M` for which the following code prints `True` to the console.
```
n = len(M)
flag = True
for i in range(n):
for j in range(n):
if (i != j) and (M[i][j] + M[j][i] != 0):
flag = False
print(flag)
```
Multiple correct
Q12
NOTE: Enter your answer to the nearest integer.
`R` is a zero-matrix, all entries are zeros, of size . Let
```
P = [[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]
Q = [[1, 1, -1],
[1, 1, -1],
[1, 1, -1]]
R = [[0, 0, 0],
[0, 0, 0],
[0, 0, 0]]
```
What is the output of the following snippet of code?
```
val = 0
for i in range(3):
for j in range(3):
R[i][j] = P[i][j] * Q[i][j]
val = val + R[i][j]
print(val)
```
Integer answer
Q13
Select all matrices `M` for which the following code prints `True` to the console.
```
# Look at the options for the value of M
n = len(M)
flag = True
for i in range(n):
for j in range(n):
if (i != j) and (M[i][j] != M[j][i]):
flag = False
print(flag)
```
Multiple correct
Q14
`M` is a matrix, represented as a list of lists, that has already been defined. The dimension of `M` is . Assume that both and are greater than or equal to and all elements of `M` are integers. Select all correct options about the code given below.
```
# M is a matrix (list of lists) that has already been defined
n = len(M[0])
flag = True
for i in range(n):
if M[0][i] - M[-1][i] != 1:
flag = False
print(flag)
```
Multiple correct
Showing 14 questions.