/coding-challenges-practice

Answers to various puzzles and coding interview questions solved in Java for practice

Primary LanguageJava

Coding Challenges

Programs implemented in Java that contains solutions to various coding challenges.

No Question/Answer Source
1 Find largest possible difference between two elements within an array?
2 Find largest possible difference between two elements within an array such that larger element always appear after the smallest? GeeksForGeeks
3 Merge given two sorted arrays?
4 Java 1-D Array (part 2) game Hackerrank
5 Find the number occurring odd number of times? GeeksForGeeks
6 Find all distinct palindromic sub-strings of a given string? GeeksForGeeks
7 Sort an array using only two operations Hackerrank
8 Angry professor Hackerrank
9 Utopian Tree Hackerrank
10 Get all the possible combinations of words from a given string
11 Cavity Map Hackerrank
12 Time In Words Hackerrank
13 Convert the given number to its readable English text in the range of 1-1000
14 Counting sort
15 Gaming array Hackerrank
16 New year chaos Hackerrank
17 Binary Gap Codility
18 Extra Long Factorials Hackerrank
19 Equalize Array Hackerrank
20 Run Length Encoding GeeksForGeeks
21 Bigger is greater Hackerrank
22 Reverse words in a string and capitalize the first letter Hackerrank
23 Sherlock and the Valid String Hackerrank
24 Balanced Brackets Hackerrank
25 Maximum Element of Stack Hackerrank
26 Anagrams Hackerrank
27 Arrays: Left Rotation Hackerrank
28 Two Strings Hackerrank
29 Time Complexity: Primality Hackerrank
30 Making Anagrams Hackerrank
31 Longest substring w/o repeating chars LeetCode
32 Longest palindromic substring LeetCode
33 Remove duplicates from sorted array LeetCode
34 Search an element in a sorted rotated array LeetCode
35 Find minimum in a sorted rotated array LeetCode
36 Generate count-and-say sequence LeetCode
37 First missing positive Integer LeetCode
38 Sum of square numbers LeetCode
39 Maximum Product of Three Numbers LeetCode
40 Excel Sheet Column Number LeetCode
41 Excel Sheet Column Title LeetCode
42 Product of Array Except Self LeetCode
43 Search for a Range LeetCode
44 Letter Combinations of a Phone Number LeetCode
45 Maximum Subarray Sum LeetCode
46 Maximum Subarray Product LeetCode
47 Sum of Two Integers LeetCode
48 Hamming Distance LeetCode
49 Battleships in a Board LeetCode
50 Number of Islands LeetCode
51 Jump Game LeetCode
52 Jump Game II LeetCode
53 Permutations II LeetCode
54 Longest Valid Parentheses LeetCode
55 Arithmetic Slices LeetCode
56 Shortest Unsorted Continuous Subarray LeetCode
57 Matrix Reshape LeetCode
58 Find All Numbers Disappeared in an Array LeetCode
59 Find All Duplicates in an Array LeetCode
60 Maximum Average Subarray I LeetCode
61 Two Sum LeetCode
62 Partition Array by Odd and Even LintCode
63 Valid Sudoku LeetCode
64 Contains Duplicate II LeetCode
65 Valid Triangle Number LeetCode
66 Count of Smaller Number LintCode
67 Palindrome Number LeetCode
68 Island Perimeter LeetCode
69 First and Last occurrences of an element in a sorted array GeeksForGeeks
70 Set Mismatch LeetCode
71 Maximum Length of Pair Chain LeetCode
72 Palindromic Substrings LeetCode
73 Replace words LeetCode
74 Move Zeroes LeetCode
75 Remove Element LeetCode
76 Longest Palindrome LeetCode
77 Isomorphic Strings LeetCode
78 Unique Paths LeetCode
79 Remove Duplicates from Sorted Array II LeetCode
80 Majority Element LeetCode
81 Two Sum II - Input array is sorted LeetCode
82 Combination Sum III LeetCode
83 Combination Sum II LeetCode
84 Combination Sum LeetCode
85 Rotate Array (right rotate) LeetCode
86 Array Nesting LeetCode
87 Rotate String LintCode
88 Recover Rotated Sorted Array LintCode
89 Maximum Gap LeetCode
90 Longest Common Prefix LintCode
91 Group Anagrams LeetCode
92 Plus One LintCode
93 Reverse Integer LintCode
94 Climbing Stairs LintCode
95 Partition Array LintCode
96 Find K Closest Elements LeetCode
97 Judge Route Circle LeetCode
98 Remove 9 LeetCode
99 Best Time to Buy and Sell Stock LeetCode
100 Best Time to Buy and Sell Stock II LintCode
101 Word Break LeetCode
102 Merge Sorted Array LintCode
103 Goldman Sachs CodeSprint - Bank Accounts HackerRank
104 3Sum LeetCode
105 Word Break LeetCode
106 Sort Letters LintCode
107 Sort Colors LintCode
108 Longest Common Substring LintCode
109 Longest Words LintCode
110 Edit Distance II LintCode
111 Rotate Image LintCode
112 Majority Number LintCode
113 Decode Ways LintCode
114 Unique Characters LintCode
115 Word Pattern LeetCode
116 Next Permutation LeetCode
117 Non-decreasing Array LeetCode
118 Count The Repetitions LeetCode
119 Find Peak Element LeetCode
120 Implement strStr() LeetCode
121 Count of Smaller Number before itself LintCode
122 Trapping Rain Water LeetCode
123 Evaluate Reverse Polish Notation LeetCode
124 Expression Expand LintCode
125 Happy Number LeetCode
126 Word Ladder LintCode
127 Is Subsequence LeetCode
128 Container With Most Water LeetCode
129 Pascal's Triangle LeetCode
130 K-diff Pairs in an Array LeetCode
131 Maximum Swap LeetCode
132 Permutations LintCode
133 Subsets LintCode
134 Subsets II LintCode
135 Longest Increasing Subsequence LeetCode
136 Longest Consecutive Sequence LeetCode
137 Longest Increasing Continuous Subsequence (from either left/right) LintCode
138 Basic Calculator LeetCode
139 Longest Continuous Increasing Subsequence LeetCode
140 Number of Longest Increasing Subsequence LeetCode
141 Maximal Square LeetCode
142 House Robber LeetCode
143 Partition Equal Subset Sum LeetCode
144 Increasing Subsequences LeetCode
145 Count Primes LeetCode
146 Valid Palindrome II LeetCode
147 Baseball Game LeetCode