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How to Pick a Category ?


Following are the top solved problems from each category. If one is able to solve all five problems of a picked category, then he/she may directly jump to next level category. If not, then one should continue with the picked category and start practicing more questions.


Subjective Questions

Problem Name Answers Views Tags Company
Divisible by 3 388 11209 C Wipro
Ant Puzzle 288 19159 Puzzles Goldman Sachs | Hike | Intuit | Oracle | Sapient | Visa
Output problem 201 4650 C Wipro
Guess the correct one ! 189 4594 C Bhel-2006
Stack Overflow 141 5621 C Infosys

School

Problem Name Submissions Accuracy Tags Company
Reverse an Array 79368 40 Arrays Infosys | Moonfrog Labs
Palindrome String 43175 31.41 Strings Amazon | Cisco | D-E-Shaw | Facebook | FactSet | Morgan Stanley | Paytm | Zoho
Armstrong Numbers 32797 48.89 Mathematical Oracle | VMWare
Sum of array elements 27966 51.61 Arrays
Reverse digits 25906 50 Mathematical MAQ Software

Basic

Problem Name Submissions Accuracy Tags Company
Missing number in array 213229 32.98 Arrays | Bit Magic | Searching Accolite | Adobe | Amazon | Cisco | D-E-Shaw | Intuit | Microsoft | Morgan Stanley | Ola Cabs | Payu | Qualcomm | Visa
Rotate Array 118425 59.87 Arrays Amazon | MAQ Software
Majority Element 95424 39.96 Arrays | Searching Accolite | Amazon | D-E-Shaw | FactSet | MakeMyTrip | Microsoft | Nagarro | Samsung
Power of 2 90473 30.97 Bit Magic | Mathematical Adobe | Amazon | BankBazaar | FactSet | Intel | Mallow Technologies | Microsoft | Oracle | Practo | Qualcomm | Samsung | SAP Labs
Immediate Smaller Element 87811 41.71 Arrays | Stack Amazon

Easy

Problem Name Submissions Accuracy Tags Company
Subarray with given sum 304972 24.99 Arrays | prefix-sum | Searching | sliding-window Adobe | Amazon | Facebook | FactSet | Google | Morgan Stanley | Visa | Zoho
Leaders in an array 146713 42.7 Arrays | Searching Amazon | Payu | Samsung
Equilibrium point 144418 37.39 Arrays | prefix-sum Accolite | Adobe | Amazon | Hike | Zoho
Sort an array of 0s, 1s and 2s 129505 48.12 Arrays | Sorting Adobe | Amazon | Hike | MakeMyTrip | MAQ Software | Microsoft | Morgan Stanley | Ola Cabs | OYO Rooms | Paytm | Qualcomm | Samsung | SAP Labs | Snapdeal | Walmart | Yatra.com
Reverse words in a given string 83364 38.05 Strings Accolite | Adobe | Amazon | Cisco | Goldman Sachs | MakeMyTrip | MAQ Software | Microsoft | Morgan Stanley | Ola Cabs | Paytm | Samsung | SAP Labs | Walmart | Wipro | Zoho

Medium

Problem Name Submissions Accuracy Tags Company
Kadane's Algorithm 193189 32.92 Arrays | Dynamic Programming 24*7 Innovation Labs | Accolite | Amazon | Citrix | D-E-Shaw | FactSet | Flipkart | Hike | Housing.com | MakeMyTrip | MetLife | Microsoft | Morgan Stanley | Ola Cabs | Oracle | OYO Rooms | Payu | Samsung | Snapdeal | Teradata | Visa | VMWare | Walmart | Zoho
Parenthesis Checker 146315 27.18 Stack Adobe | Amazon | Flipkart | Hike | Oracle | OYO Rooms | Snapdeal | Walmart | Wipro | Yatra.com | Zoho
Kth smallest element 107876 58.64 Arrays | Searching | Sorting ABCO | Accolite | Amazon | Cisco | Hike | Microsoft | Snapdeal | VMWare
Maximum Index 107437 31.25 Arrays Amazon | Google | Snapdeal | VMWare
Minimum Platforms 102563 17.22 Arrays | Greedy Accolite | Amazon | Boomerang Commerce | D-E-Shaw | Directi | Hike | Morgan Stanley | OYO Rooms | Paytm | Walmart | Zillious

Hard

Problem Name Submissions Accuracy Tags Company
Merge Without Extra Space 65250 25.21 Arrays | Mathematical | Sorting Amazon | Amdocs | Brocade | FactSet | Goldman Sachs | Juniper Networks | Linkedin | Microsoft | Quikr | Snapdeal | Synopsys | Visa | Zoho
Find median in a stream 59375 30.57 Heap Adobe | Amazon | Apple | Belzabar | D-E-Shaw | Facebook | FactSet | Flipkart | Google | Hike | Intuit | MAQ Software | Microsoft | Morgan Stanley | Ola Cabs | Oracle | OYO Rooms | Samsung | SAP Labs | Walmart | Yahoo
Ugly Numbers 55779 39.96 Arrays | Mathematical Goldman Sachs | Google | Paytm | Walmart
Longest valid Parentheses 36258 24.1 Stack Google
Closest Palindrome 31172 6.38 Mathematical Amazon