HackerRank Flowchart Quiz -1

Step 1: Box 4 - Box 1 ---------> Box 10

9 - 11 = -2



Step 2: Box 10 < 0

-2 < 0 (yes)

Step 3: then Box 9 + Box 5 ---------> Box 2

2 + 7 --------> 9



Step 4: Box 2 > Box 7

9 > 7 (yes)

Then Step 5: Box 10 x Box 2 --------> Box 3

-2 x 9 ------> -18



Now checking from the options Box 7 is the only box which remains unchanged. Therefore Box 7 is the correct answer

Answer:

Step 3: then Box 9 + Box 5 ---------> Box 2 (Original Step)

2 + 7 --------> 9



But According to the question instead of updating the value in Box 2 it asked to update the same value in box 3. Then,

Step 3: then Box 9 + Box 5 ---------> Box 3 (Updated Step)

2 + 7 --------> 9



Step 4: Box 3 > Box 7

9 > 7 (yes)

Then Step 5: Box 10 x Box 2 --------> Box 3

-2 x 9 ------> -18



Therefore, even if Box 3 is updated instead of Box 2 in Step 3,

In Step 4, Number in Box 3 is compared with Box 7,

and the value is anyway greater, so the result is YES there and thus exiting and finishing the loop. That is why the answer is False

Answer:

The instruction 1 gets modified as long as the condition becomes false.

Step 1: defines (on the first occurance) and executes the instruction

Step 2: modifies the instruction

Step 3: does an evaluation

On each loop, the box 2, 4, 6, 8, 10... gets filled with 0. We need to limit it until 6 only.

When the last box count becomes 6, we need to execute the instruction. So, box 3 should not have 6. After executing the instruction, it updates the box number to 8. Here, we need to break.

So, box 3 should contain 8.

Step 1: (Number in box 11) + 3 -------> Box 11

4 + 3 = 7 -------> Box 11



Step 2: (Number in Box 1)----------> Box 10

10 ---------> Box 10

Therefore,



Step 3: The first Box number mentioned in step 2 was Box 1and 1 is odd. Therefore YES.

 

Step 4: According to this step we have to go to the instruction of the corresponding number in the box whose number is in box 6.

So Box 6 has 2 as a number and Box 2 has 6 as the number. Therefore we have to jump to step 6.

 

Step 6: (Number in )Box 5 + (Number in )Box 11 -------> (Number in )Box 11

6           +       7 --------> 13-----> Box 11



Step 7: By changing the Step 2
We have to add and subtract the number in box 12 with box 1 and box 10

Now Box 1 + 3 = Box 4 and Box 10 - 3 = Box 7

And now changing the number in Box 7 by the number in Box 4



Step 8: Last Box number mentioned in step 2 was box 7

And the number in Box 1 is 10. According to Step 7: 7 is less than 10 (YES).

Flowchart Ends. Therefore Box 8 and Box 11 contain 13.

Answer is 13, 13

Backtracking from the options given

If you put [Box 1] = 11 then instruction and @ Instruction 3: IS [Box 1] 11 < [Box 4]12  Yes

If you put [Box 1] = 9 then instruction and @ Instruction 3: IS [Box 1] 9 < [Box 8]10  Yes

If you put [Box 1] = 3 then instruction and @ Instruction 3: IS [Box 1] 3 < [Box 2]4  Yes

As per mention above we have to double 2,4,6,8,10 value...so loop never ends before updating upto

[Box 10] that's why our ans become 16

Answer:

Instruction 1 : 4 [Box 3] + 5 [Box 11] = 9 [Box 11]

Instruction 2 : 5 [Box 1] + 11 [Box 11] = 16 [Box 5]

Instruction 3 : 7 [Box 4] * 7 [Box 4] = 49 [Box 4]

Instruction 4 : IS 16 [Box 5] = 10 [Box 10] ? NO

Instruction 5 : 49 [Box 4] - 6 = 43 [Box 4]

Instruction 6 : 16 [Box 5] + (-6) [Box 2] = 10 [Box 5]

Instruction 3 : 43 [Box 4] * 43 [Box 4] = 1849 [Box 4]

Instruction 4 : IS 10 [Box 5] = 10 [Box 10] ? YES

Instruction 7 : 22 [Box 7] - 10 [Box 5] = 2 [Box 8]

Instruction 8 : 1849 [Box 4] + 2 [Box 8] = 1851 [Box 6]

ANSWER Box 6 = 1851

Step 1: (number in box 4) - (number in box whose number is in box 7)---------> Box 1

7 - 4 = 3 ----> Box 1



Step 2: (number in box 1) + (number in box 6)---------> Box 1

3 + 5 = 8--------> Box 1

 

Step 3: (number in box 1) divided by 4

8/4 = 2 (YES)

 

Going again to Step 2: (number in box 1) + (number in box 6)----------> Box 1

8 + 5 = 13---------> Box 1

 

Step 3: (number in box 1) divided by 4

13/4 = 3.25 (NO)



Step 4: (Second box mentioned is box 6)

Now Box 6 + ( number in the box whose number is in box 5)

Box 6 + ( number in box 8) ---------> Box 6

5 + 8 = 13 --------Box 6



Step 5: Number in box 2 > number in box 6

15 > 13 (YES)

 

Step 6: (Subtract number in box 9 ) - 1 -------> Box 9

9 - 1 = 8



Now going again to Step 2

Step 2 : ( number in box 1 ) + ( number in box 6 ) ---------> Box 1

13 + 5 = 18 ---------> Box 1

Step 3 : ( number in box 1 ) evenly divisible by 4

18/4 = 4.5



Step 4: Second Box mentioned was Box 6. Then according to the question

Box 6 + ( number in the box whose number is in box 5)

Box 6 + ( number in box 8) ---------> Box 6

13 + 8 = 21 --------Box 6



Step 5: Number in box 2 > Number in Box 6

15 > 21 (NO)

Flowchart ends. Number in box 1 is 18.

Answer:

Taking from the options provided

If Box 4 = 7

Instruction 1 : 6[ Box 1] - 6[Box 1] = 0[Box 3]

Instruction 2 : 0[Box 3] + 4[Box 9] = 4[Box 3]

Instruction 3 : IS 7[Box 4] > 9[Box No.] = NO

Instruction 4 : 9 [Box No.] - 1 = 8 [Box No.]

Instruction 2 : 4[Box 3] + 8[Box 8] = 12[Box 3]

Instruction 3 : IS 7[Box 4] > 8[Box No.] ? = NO

Instruction 4 : 8[Box No.] - 1 = 7[Box No.]

Instruction 2 : 12[Box 3] + 7[Box 7] = 19[Box 3]

Instruction 3 : IS 7[Box 4] > 7[Box No.] = NO

Instruction 4 : 7[Box No.] - 1 = 6 [Box No.]

Instruction 2 : 19[Box 3] + 3[Box 6] = 22[Box 3]

Instruction 3 : IS 7[Box 4] > 6[Box No.] ? = YES

ANSWER Box 4 = 7.

Answer:

Assume Box 2 has number 2, Box 3 has number 3 and so on.

And Box 1 has number 10

Instruction 1 : 2 [Box 2] + 2[Box 2] = 4[Box 2]

Instruction 2 : 2 [Box No.] + 2 = 4 [Box No.]

Instruction 3 : IS 10 [Box 1] < 4 [Box No.] ? NO

Instruction 1 : 4 [Box 4] + 4{Box 4] = 8[Box 4]

Instruction 2 : 4 [Box No.] + 2 = 6 [Box No.]

Instruction 3 : IS 10 [Box 1] < 6 [Box No.] ? NO

Instruction 1 : 6 [Box 6] + 6 [Box 2] = 12[Box 6]

Instruction 2 : 6 [Box No.] + 2 = 8 [Box No.]

Instruction 3 : IS 10 [Box 1] < 8 [Box No.] ? NO

Instruction 1 : 8 [Box 8] + 8 [Box 8] = 16[Box 8]

Instruction 2 : 8 [Box No.] + 2 = 10 [Box No.]

Instruction 3 : IS 10 [Box 1] < 10 [Box No.] ? NO

Instruction 1 : 10 [Box 10] + 10 [Box 10] = 20[Box 10]

Instruction 2 : 10 [Box No.] + 2 = 12 [Box No.]

Instruction 3 : IS 10 [Box 1] < 12 [Box No.] ? YES

ANSWER is 10

Answer:

Assume Box 2 has number 2, Box 3 has number 3 and so on.

And Box 10 has number 4

Instruction 1 : 5 [Box 5] - 5 [Box 5] = 0 [Box 5]

Instruction 2 : 1 [Box 1] + 0 [Box 5] = 1[Box 5]

Instruction 3 : IS 1 [Box No.] < 4 [Box 10] ? YES

Instruction 4 : 1 [Box 5] + 9 [Box 9] = 10 [Box 5]

Instruction 5 : 1 [Box No.] + 1 = 2[Box No.]

Instruction 6 : 9 [Box No.] - 1 = 8 [ Box No.]

Instruction 2 : 2 [Box 2] + 10 [Box 5] = 12 [Box 5]

Instruction 3 : IS 2 [Box No.] < 4 [Box 10] ? YES

Instruction 4 : 12 [Box 5] + 8 [Box 8] = 20 [Box 5]

Instruction 5 : 2 [Box No.] + 1 = 3 [Box No.]

Instruction 6 : 8 [Box No.] - 1 = 7 {box No.]

Instruction 2 : 3 [Box No.] + 20 [Box 5] = 23 [Box 5]

Instruction 3 : IS 3 [Box No.] < 4 [Box 10] ? YES

Instruction 4 : 23 [Box 5] + 7 [Box 7] = 30 [Box 5]

Instruction 5 : 3 [Box No.] + 1 = 4 [Box No.]

Instruction 6 : 7 [Box No.] - 1 = 6 [Box No.]

Instruction 2 : 4 [Box 4] + 30 [Box 5] = 34 [Box 5]

Instruction 3 : IS 4 [Box No.] < 4 [Box 10] ? NO

ANSWER Box 10 = 4