Cross the Bridge

72

29.17 
String 
lock

 
Easy string

208

37.02 
Stack  String 
lock

 
XOR of two numbers after making length of their binary representations equal

49

79.59 
binary  BitAlgorithm 
lock

 
Hungry Pizza Lovers

167

35.93 
Arrays  GreedyAlgorithm 
lock

 
Inverse Permutation

234

52.99 
Arrays 
lock

 
Check if a number is divisible by 8

1004

22.01 
binary  BitAlgorithm  Mathematical  Maths 
lock

 
Convert a sentence into its equivalent mobile numeric keypad sequence

442

23.98 
Hashing  strings 
lock

 
Sum of all subsequences of a number

251

31.87 
CPP  strings 
lock

 
Find the most frequent digit

498

32.53 
Hashing  Mathematical  strings 
lock

 
N’th Pentagonal Number

155

42.58 
Mathematical 
lock

 
Primorial of a number

294

23.81 
factorial  Mathematical  Prime 
lock

 
Swap every two bits in bytes

229

59.83 
binary  BitAlgorithm 
lock

Cisco 
Count pairs Sum in matrices

340

21.47 
Hashing  Matrix  Sorting 
lock

 
C++ Matrix Rotation by 180 degree

159

44.65 
2D Array  CPP  Maths  Matrix 
lock

 
Damon Prime

403

23.08 
Prime 
lock

 
String Modification

218

40.83 
map  misc  String 
lock

 
Villain Con

150

5.33 
dfs  Graph 
lock

 
Maximum Product Cutting

407

10.07 
DynamicProgramming 
lock

 
Counts Zeros Xor Pairs

364

55.49 
Array  BitAlgorithm  Sorting 
lock

 
Cross the hurdles: The Game

214

34.11 
Arrays 
lock

 
Making elements distinct

599

21.04 
Array 
lock

 
Count ways to express N as the sum of 1,3 and 4

437

23.57 
modular arithmetic  DynamicProgramming 
lock

 
Amicable Pair

380

61.32 
Mathematical 
lock

 
Rope Cutting

551

46.64 
Array  Sorting 
lock

 
Maximize permutations

177

16.38 
Maths  permutation  String 
lock

 
Mike and Chocolates

118

17.8 
simplemath 
lock

 
C++ Alternate words in reverse order.

107

21.5 
CPP  STL  strings 
lock

 
Ease the Array

2521

23.8 
Array 
lock

Microsoft 
Closest Triplet

209

35.41 
 
lock

 
Extra Perfect Numbers

220

52.27 
BitAlgorithm  number theory 
lock

 
C++ Visible Numbers

351

30.77 
Arrays  CPP 
lock

 
Maximum height of the staircase

986

50.81 
Maths 
lock

GoldmanSachs 
C++ Basic Data types

224

18.3 
CPP  Data Type  String 
lock

 
Kronecker Product

80

21.25 
Matrix 
lock

 
Find smallest values of x and y such that ax – by = 0

381

41.73 
Mathematical 
lock

 
Cosmic Number

369

24.93 
Mathematical  Maths  numbers  String 
lock

 
Missing Intervals

427

13.35 
STL  String 
lock

 
Compute nCr % p

271

13.65 
Mathematical 
lock

 
Equal Sums

268

36.57 
Array 
lock

 
Even Decimal Binary String

83

33.73 
String 
lock

 
Check if array contains contiguous integers with duplicates allowed

3820

33.06 
Array  Hashing  Sorting 
lock

Amazon 
Rearrange an array such that arr[i] = i

743

46.3 
Arrays  Hashing 
lock

 
NonRepeating Element

1191

46.52 
Array  Hashing  STL 
lock

Snapdeal 
Next Happy Number

147

50.34 
Recursion 
lock

 
The invariable units digit

417

22.78 
Maths  strings 
lock

 
Word with maximum frequency

173

41.04 
Arrays  maps  strings 
lock

 
Form a number divisible by 3 using array digits

455

57.58 
Maths 
lock

 
A New Year Game

412

20.87 
misc 
lock

 
Smallest subarray with all occurences of most frequent element

579

13.82 
Array 
lock

 
Longest substring having frequency of each char less than integer k

96

26.04 
String 
lock

 