Algorithm Problem Practice

TitleTagsAcceptanceDifficulty
Join Two Strings
strings
96%
Easiest
Add Two Numbers
integers
99%
Easiest
Integers From the End of Array
integers
arrays
90%
Easiest
Integer Equal to It's Index
integers
arrays
96%
Easiest
Return String at Character
strings
94%
Easiest
Remove Letters from Special Characters
arrays
strings
95%
Easiest
Largest Integer in Array
integers
arrays
99%
Easiest
Joining Characters in an Array
strings
arrays
99%
Easiest
Find the Number of 1's in a 2D Array
integers
arrays
96%
Easiest
Splitting Strings
strings
arrays
86%
Easiest
Duplicating Strings
strings
arrays
98%
Easiest
Kth Integer From End of Array
integers
arrays
100%
Easiest
Remove First Integer in Array
integers
arrays
99%
Easiest
Prefix of a String
strings
99%
Easiest
Multiples of Integers
arrays
integers
97%
Easiest
Remove all Zeros from Array
integers
arrays
99%
Easiest
Sum an Array of Integers
arrays
numbers
100%
Easiest
Alternate Between Upper and Lower Case Characters
strings
arrays
99%
Easiest
Remove the First Element in Array
strings
arrays
99%
Easiest
Find Last Occurrence of Integer in Array
integers
arrays
98%
Easiest
Find Sequence of Integers in Another Array
integers
arrays
95%
Easiest
Find Identical Characters in a Row
strings
99%
Easiest
Movement on an X-Y Plane with 2D Arrays
integers
arrays
99%
Easiest
Find String in Array of Strings
strings
arrays
100%
Easiest
Reversing an Array of Integers
integers
arrays
100%
Easiest
Movement of a Person Given an Array
integers
strings
arrays
99%
Easiest
Check if a String is a Palindrome
strings
99%
Easiest
Products of Integers in Array
integers
arrays
99%
Easiest
Reverse List of Strings
strings
arrays
99%
Easiest
Integers in Range of X,Y
integers
arrays
98%
Easy
Find Integer in Array
integers
arrays
99%
Easy
Sum of Strings
arrays
strings
99%
Easy
Arrays of Integers
arrays
integers
98%
Easy
Pairs of Integers
integers
arrays
95%
Easy
Create a Multiplication Table
integers
arrays
99%
Easy
Intersection of an Array
integers
arrays
100%
Easy
Merging Sorted Array of Integers
arrays
integers
98%
Easy
Character Appears Even Number of Times
strings
96%
Easy
Array of Strings Without Special Characters
strings
arrays
95%
Easy
Find the Most Frequently Occurring Character
strings
integers
85%
Easy
Strings of Anagrams
arrays
strings
93%
Easy
Sum Each Digit of an Integer
integers
100%
Easy
Reverse Characters in a String
strings
91%
Easy
Find the First Duplicate
arrays
integers
88%
Easy
Remove Duplicated Strings
arrays
strings
99%
Easy
Find the Missing Number
integers
arrays
91%
Easy
2D Array of Integers With Square Root Dimensions
integers
arrays
98%
Easy
Find the Largest Sum
arrays
integers
89%
Easy
Right Side Equal to the Left
integers
arrays
93%
Easy
Find the Character That Doesn't Belong
strings
94%
Easy
Quantity of Numbers Between
integers
72%
Easy
Find Closest Point in Array
integers
arrays
84%
Easy
Find the Median of an Array
arrays
integers
75%
Easy
Find the Next Time Formed by String
strings
43%
Easy
Reverse Words in a Sentence
strings
98%
Easy
Find Two Duplicate Strings
strings
arrays
85%
Easy
Find Common Integers
arrays
integers
95%
Easy
Palindromic Numbers
integers
98%
Easy
Move Zeroes to the End
integers
arrays
100%
Easy
Array of Strings From a Pattern
strings
arrays
97%
Easy
Array as a Single Integer
integers
arrays
100%
Easy
Add Arrays Like Single Numbers
integers
arrays
100%
Easy
Largest Integer in Array, Smaller Than K
integers
arrays
97%
Easy
Return a Rectangle as a 2D array
integers
arrays
66%
Easy
Greatest Difference Between Two Integers
integers
arrays
100%
Easy
Sort an Array of Strings
strings
arrays
85%
Easy
Anagrams
strings
92%
Easy
Strings as Operators
strings
arrays
59%
Easy
Matching Digits from Two Integers
integers
arrays
93%
Easy
Swap Upper and Lower Case Characters in a String
strings
93%
Easy
Camel Case and Clean a String
strings
87%
Easy
Find Overlapping Rectangles
integers
arrays
91%
Easy
Find the Column Number of a Spreadsheet
strings
integers
94%
Easy
Merge 2D Array into Single Array
integers
arrays
100%
Easy
Find the K Middle Integers Between Two Integers
integers
95%
Easy
Find the First Exact Match in an Array of Strings
strings
arrays
96%
Easy
Return Array with all Palindromes Found in String
strings
arrays
65%
Easy
Check if Two Strings With Special Characters are Anagrams
strings
95%
Easy
Largest Integer in Array Within Range of Arguments
integers
arrays
96%
Easy
Find the Smallest Whole Number Not in Array
integers
arrays
89%
Easy
Find String in Array That is Repeated an Odd Number of Times
strings
arrays
100%
Easy
Find the Non-duplicated String
strings
arrays
97%
Easy
Create a New Array of Every Kth Largest Element
integers
arrays
95%
Easy
Splitting Integers into 2D Array
arrays
integers
100%
Easy
Adding Rows of a 2D Array
arrays
integers
89%
Easy
Prime Numbers Less Than Argument
integers
arrays
100%
Easy
Password Complexity Checker
strings
80%
Easy
Convert 2D Array to a 1D Array
integers
arrays
89%
Easy
Cards of the Same Suit
strings
arrays
100%
Easy
Replacing Characters with other Characters
strings
96%
Easy
Add Minutes to String Representing Time
integers
strings
95%
Easy
Swap Sequential Pairs of Integers
strings
arrays
97%
Easy
String to Array of Strings
strings
arrays
84%
Easy
Interval in an Array of Intervals
arrays
integers
92%
Medium
Longest Common Prefix
arrays
strings
68%
Medium
Sequence That Returns Largest Sum
arrays
integers
78%
Medium
Binary Insertion Sort of Integers
integers
arrays
sorting
100%
Medium
Sum and Sort List of Integers
arrays
integers
sorting
93%
Medium
Sort a List of Timestamps
strings
arrays
sorting
96%
Medium
Additional Characters Needed to Make up a String
strings
arrays
94%
Medium
Largest Common Integer
integers
arrays
94%
Medium
Longest Increasing Sequence
integers
arrays
87%
Medium
Find a Column in 2D Array of All Ones
integers
arrays
94%
Medium
Merging Arrays of Integers in 2D Array
arrays
integers
100%
Medium
Pascal's Triangle
arrays
sorting
100%
Medium
Closest Points in 2D Array
arrays
integers
70%
Medium
Smallest Interval in 2D Array
integers
arrays
93%
Medium
Two Elements Add Up to Argument
integers
arrays
100%
Medium
Balanced Parenthesis
strings
100%
Medium
Find Equal Integer Pairs in an Array
integers
arrays
94%
Medium
Merging Two Sorted Arrays of Strings
strings
arrays
95%
Medium
Remove Duplicates from a 2D Array
strings
arrays
100%
Medium
Sort Values of Array Based on Squares
integers
arrays
100%
Medium
Anagrams in a List of Strings
strings
arrays
95%
Medium
Balancing Parenthesis
strings
88%
Medium
Smaller Number With All the Same Integers
integers
79%
Medium
Merge and Sort Two Arrays of Integers
integers
arrays
97%
Medium
Merge Overlapping Intervals
arrays
integers
73%
Medium
Intervals Without Overlaps
arrays
integers
89%
Medium
Sort Strings in 24 Hour Clock Format
strings
arrays
94%
Medium
Sorting Points in a 2D Array by Distance from Origin
arrays
integers
100%
Medium
Rotate a 2D Array Matrix by 90 Degrees
integers
arrays
92%
Medium
Sorting a 2D Array Without Changing Inner Array Length
integers
arrays
100%
Medium
Return New Directory Path of a Change Command
strings
100%
Medium
Largest Sum of Two Non-Adjacent Elements
integers
arrays
92%
Medium
Change Strings in 2D Array Based on Conditions
strings
arrays
100%
Medium
Cycle in an Array
arrays
integers
76%
Medium
Sum of Traversed Integers in a 2D Array
integers
arrays
63%
Medium
Number of Hours it Takes a Worker to Finish Job
integers
arrays
92%
Medium
Longest Palindrome
strings
74%
Hard
Liquid in a Soda Machine
integers
arrays
69%
Hard
Non-overlapping Intervals
arrays
integers
100%
Hard
Combinations of Integers
integers
arrays
75%
Hard
Sum of Continuous Subarray
arrays
integers
100%
Hard
Find the Largest Prime Number
arrays
integers
67%
Hard
Matching Strings
strings
94%
Hard
Adding Lists of Integers
integers
arrays
92%
Hard
Number of Sums of a Subset
integers
80%
Hard
Identical Strings from Swapping Characters
strings
arrays
100%
Hard
Points in a Straight Line
arrays
integers
80%
Hard
Closest Sum in an Array
arrays
integers
67%
Hard
Decoding a Cipher
cryptography
integers
arrays
86%
Hard
Evaluating Expressions in Strings
strings
integers
57%
Hard
Traversing a Path in a 2D Array
integers
arrays
100%
Hard
Shortest Substring
arrays
strings
78%
Hard
Boxes and Walls in a 2D Array
strings
arrays
100%
Hard
Polynomial Equations
integers
strings
29%
Hard
Form a String from Array of Characters
strings
arrays
80%
Hard
Find Integer Pair in Array with K elements Between
integers
arrays
89%
Hard
Multiplying and Adding Rows of 2D and 1D Arrays
integers
arrays
100%
Hard
Largest Sum of Non-Adjacent Elements
integers
arrays
100%
Hard
Find the Number of Continents in a 2D Array
integers
arrays
100%
Hard
Sorting Strings Inside Strings
strings
sorting
76%
Hardest
Largest K by K Group in 2D Array
arrays
integers
75%
Hardest
Find String in 2D Array of Strings
strings
arrays
84%
Hardest
Find Dividend Without Using Division Operator
integers
92%
Hardest
Rectangle in a 2D Array
arrays
integers
59%
Hardest
Problems Left
157  pending
Problems Solved
0  solved