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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 14314 C Wipro
Ant Puzzle 288 28737 Puzzles Goldman Sachs | Hike | Intuit | Oracle | Sapient | Visa
Output problem 201 5819 C Wipro
Guess the correct one ! 189 5701 C Bhel-2006
Stack Overflow 141 8317 C Infosys

School

Problem Name Submissions Accuracy Tags Company
Reverse an Array 120492 40 Arrays Infosys | Moonfrog Labs
Sum of array elements 54272 51.61 Arrays
Palindrome String 51420 31.41 Strings Amazon | Cisco | D-E-Shaw | Facebook | FactSet | Morgan Stanley | Paytm | Zoho
Armstrong Numbers 36165 48.89 Mathematical Oracle | VMWare
Value equal to index value 31598 32.91 Arrays | Searching Amazon | FactSet | Hike

Basic

Problem Name Submissions Accuracy Tags Company
Missing number in array 262261 32.98 Arrays | Bit Magic | Searching Accolite | Adobe | Amazon | Cisco | D-E-Shaw | Intuit | Microsoft | Morgan Stanley | Ola Cabs | Payu | Qualcomm | Visa
Rotate Array 186172 59.87 Arrays Amazon | MAQ Software
Majority Element 116130 39.96 Arrays | Searching Accolite | Amazon | D-E-Shaw | FactSet | MakeMyTrip | Microsoft | Nagarro | Samsung
Power of 2 109692 30.97 Bit Magic | Mathematical Adobe | Amazon | BankBazaar | FactSet | Intel | Mallow Technologies | Microsoft | Oracle | Practo | Qualcomm | Samsung | SAP Labs
Pythagorean Triplet 94711 38.09 Arrays Amazon

Easy

Problem Name Submissions Accuracy Tags Company
Subarray with given sum 424112 24.99 Arrays | prefix-sum | Searching | sliding-window Adobe | Amazon | Facebook | FactSet | Google | Morgan Stanley | Visa | Zoho
Leaders in an array 182110 42.7 Arrays | Searching Amazon | Payu | Samsung
Equilibrium point 175235 37.39 Arrays | prefix-sum Accolite | Adobe | Amazon | Hike | Zoho
Sort an array of 0s, 1s and 2s 157133 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
0 - 1 Knapsack Problem 106947 35.71 Dynamic Programming Amazon | Directi | Flipkart | GreyOrange | MakeMyTrip | Microsoft | Mobicip | Morgan Stanley | Oracle | Payu | Snapdeal | Visa | Zoho

Medium

Problem Name Submissions Accuracy Tags Company
Kadane's Algorithm 241506 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 186121 27.18 Stack Adobe | Amazon | Flipkart | Hike | Oracle | OYO Rooms | Snapdeal | Walmart | Wipro | Yatra.com | Zoho
Kth smallest element 164437 58.64 Arrays | Searching | Sorting ABCO | Accolite | Amazon | Cisco | Hike | Microsoft | Snapdeal | VMWare
Next larger element 136521 33.32 Stack Amazon | Flipkart | OYO Rooms | Samsung | Snapdeal | Zoho
Maximum Index 129773 31.25 Arrays Amazon | Google | Snapdeal | VMWare

Hard

Problem Name Submissions Accuracy Tags Company
Merge Without Extra Space 86669 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 72710 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 71059 39.96 Arrays | Mathematical Goldman Sachs | Google | Paytm | Walmart
Longest valid Parentheses 45882 24.1 Stack Google
N-Queen Problem 34682 32.75 Backtracking Accolite | Amazon | Amdocs | D-E-Shaw | MAQ Software | Twitter | Visa