/algorithm-solution

Primary LanguageJava

Leetcode

Num Challenge Type Solution Date
905 Sort Array By Parity - Solution 2020-09-20
412 Fizz Buzz - Solution 2020-09-19
824 Goat Latin - Solution 2020-09-19
929 Unique Email Addresses - Solution 2020-09-18
344 Reverse String - Solution 2020-09-18
852 Peak Index in a Mountain Array - Solution 2020-09-18
657 Robot Return to Origin - Solution 2020-09-18
1290 Convert Binary Number in a Linked List to Integer - Solution 2020-09-17
1304 Find N Unique Integers Sum up to Zero - Solution 2020-09-17
1464 Maximum Product of Two Elements in an Array - Solution 2020-09-17
832 To Lower Case - Solution 2020-09-16
217 Contains Duplicate - Solution 2020-09-15
832 Flipping an Image - Solution 2020-09-14
1436 Destination City - Solution 2020-09-14
938 Range Sum of BST - Solution 2020-09-14
1323 Maximum 69 Number - Solution 2020-09-12
1572 Matrix Diagonal Sum - Solution 2020-09-12
1534 Count Good Triplets - Solution 2020-09-12
1221 Split a String in Balanced Strings - Solution 2020-09-11
1389 Create Target Array in the Given Order - Solution 2020-09-11
121 Best Time to Buy and Sell Stock - Solution 2020-09-10
1486 Kids With the Greatest Number of Candies - Solution 2020-09-05
1313 Decompress Run-Length Encoded List - Solution 2020-09-04
1281 Subtract the Product and Sum of Digits of an Integer - Solution 2020-09-03
1365 How Many Numbers Are Smaller Than the Current Number - Solution 2020-09-02
1528 Shuffle String - Solution 2020-09-01
771 Jewels and Stones - Solution 2020-08-31
1342 Number of Steps to Reduce a Number to Zero - Solution 2020-08-31
1108 Defanging an IP Address - Solution 2020-08-30
1512 Number of Good Pairs - Solution 2020-08-28
1431 Kids With the Greatest Number of Candies - Solution 2020-08-28
1470 Shuffle the Array - Solution 2020-08-28
1480 Running Sum of 1d Array - Solution 2020-08-28
933 Number of Recent Calls Queue Solution 2020-03-06
997 Find the town judge Graph Solution 2020-03-06
2 Add two numbers LinkedList Solution 2020-03-06
100 Same Tree Tree Solution 2020-03-04
58 Lenghth of Last Word - Solution 2020-01-30
35 Search Insert Position - Solution 2020-01-29
28 Implement strStr() - Solution 2020-01-29
27 Remove Element - Solution 2019-12-12
26 Remove Duplicates from Sorted Array - Solution 2019-12-11
21 Merge Two Sorted Lists - Solution 2019-12-11
20 Valid Parentheses - Solution 2019-11-08
14 Longest Common Prefix - Solution 2019-10-31
11 Roman Integer - Solution 2019-10-30
9 Palindrome Number - Solution 2019-10-26
7 Reverse Integer - Solution 2019-10-26
1 Two Sum - Solution 2019-10-24

Programmers

Level Challenge Type Solution Date
1 완주하지 못한 선수 해시 Solution 2019-09-23
1 K번째 수 정렬 Solution 2019-09-24
1 가운데 문자 뽑기 연습 Solution 2019-09-25
1 서울에서 김서방 찾기 연습 Solution 2019-09-26
1 수박수박수박수박수박수? 연습 Solution 2019-09-26
1 문자열을 정수로 바꾸기 연습 Solution 2019-09-26
1 문자열 내 p와 y의 개수 연습 Solution 2019-09-27
1 같은 숫자는 싫어 연습 Solution 2019-09-30
1 문자열 다루기 기본 연습 Solution 2019-09-30
1 자릿수 더하기 연습 Solution 2019-10-01
1 약수의 합 연습 Solution 2019-10-01
1 제일 작은 수 제거하기 연습 Solution 2019-10-03
1 평균 구하기 연습 Solution 2019-10-03
1 핸드폰 번호 가리기 연습 Solution 2019-10-03
1 나누어 떨어지는 숫자 배열 연습 Solution 2019-10-04
1 짝수와 홀수 연습 Solution 2019-10-04
1 정수 제곱근 판별 연습 Solution 2019-10-04
1 자연수 뒤집어 배열로 만들기 연습 Solution 2019-10-06
1 2016년 연습 Solution 2019-10-06
1 최대공약수와 최소공배수 연습 Solution 2019-10-07
1 소수찾기 연습 Solution 2019-10-08
1 문자열 내 마음대로 정렬하기 연습 Solution 2019-10-13
1 하샤드 수 연습 Solution 2019-10-13
1 콜라츠 추측 연습 Solution 2019-10-14
1 x만큼 간격이 있는 n개의 숫자 연습 Solution 2019-10-14
1 이상한 문자 만들기 연습 Solution 2019-10-15
1 시저 암호 연습 Solution 2019-10-21
1 정수 내림차순으로 배치하기 연습 Solution 2019-10-21
1 행렬의 덧셈 (미완료) 연습 Solution 2019-11-05
1 체육복 탐욕법 Solution 2019-11-12
1 더 맵게 힙 Solution 2020-03-18
2 타겟 넘버 DFS/BFS Solution 2020-03-19
2 탑 스택/큐 Solution 2020-03-26
1 모의고사 완전탐색 Solution 2020-04-04

HackerRank

Data Structure

Category Challenge Points Solution Date
Arrays Arrays_DS 10 Solution 2019-03-23
Linked Lists PrintTheElementsOfaLinkedList 5 Solution 2020-03-13
Linked Lists InsertaNodeAtTheHeadOfaLinkedList 5 Solution 2020-03-13

30 Days of Code

Day Challenge Points Solution Date
0 Hello,World. 30 Solution 2019-03-22
1 Data Types 30 Solution 2019-03-22
2 Operators 30 Solution 2019-03-22
3 Intro to Conditional Statements 30 Solution 2019-03-23
4 Class vs. Instance 30 Solution 2019-03-23
5 Loops 30 Solution 2019-03-23
6 Let's Review 30 Solution 2019-03-23
7 Arrays 30 Solution 2019-03-23
8 Dictionaries and Maps 30 Solution 2019-03-23
9 Recursion 3 30 Solution 2019-03-23

Algorithms

Subdomain Challenge Points Solution Date
Warmup Solve Me First 1 Solution 2019-03-23
Warmup Simple Array Sum 10 Solution 2019-03-23
Warmup Compare the Triplets 10 Solution 2019-03-23
Warmup A Very Big Sum 10 Solution 2019-03-23
Warmup Diagonal Difference 10 Solution 2019-03-23
Warmup Plus Minus 10 Solution 2019-03-23
Warmup Staircase 10 Solution 2019-03-23
Warmup Mini-Max Sum 10 Solution 2019-03-23
Warmup Birthday Cake Candles 10 Solution 2019-03-23
Warmup Time Conversion 15 Solution 2019-03-23
Implementation Grading Students 10 Solution 2019-03-23
Implementation Apple and Orange 10 Solution 2019-03-23
Implementation Kangaroo 10 Solution 2019-03-23
Implementation Breaking the Records 10 Solution 2019-03-23

Java

Subdomain Challenge Points Solution Date
Introduction Java Stdin and Stdout I 5 Solution 2019-04-12
Introduction Java If-Else 5 Solution 2019-04-12
Introduction Java Stdin and Stdout II 10 Solution 2019-04-12
Introduction Java Output Formatting 10 Solution 2019-04-15
Introduction Java Loops 1 10 Solution 2019-04-15
Introduction Java Datatypes 10 Solution 2019-04-23
Introduction Java End-of-file 10 Solution 2019-04-24
Introduction Java Static Initializer Block 10 Solution 2019-04-25
Introduction Java Int to String 10 Solution 2019-04-25
Introduction Java Date and Time 15 Solution 2019-04-25
Introduction Java Currency Formatter 15 Solution 2019-04-27
Strings Java Strings Introduction 5 Solution 2019-04-27
Strings Java Substring 5 Solution 2019-04-27
Strings Java Substring Comparisons 10 Solution 2019-04-27
Strings Java String Reverse 10 Solution 2019-04-29
Strings Java Anagrams 10 Solution 2019-04-30
Strings Java String Tokens 15 Solution 2019-05-06
Strings Pattern Syntax Checker 20 Solution 2019-05-17
Strings Java Regex 25 Solution 2019-06-04
Strings Java Regex 2 - Duplicate Words 25 Solution 2019-06-05
Strings Valid Username Regular Expression 20 Solution 2019-06-06
BigNumber Java Primality Test 20 Solution 2019-06-08
BigNumber Java BigInteger 10 Solution 2019-06-09
Strings Tag Content Extractor 20 Solution 2019-06-09
Data Structures Java 1D Array 5 Solution 2019-06-11

Python

Subdomain Challenge Points Solution Date
Introduction Say "Hello, World!" With Python 5 Solution 2019-03-19
Introduction Python If-Else 10 Solution 2019-03-23
Introduction Arithmetic Operators 10 Solution 2019-03-23
Introduction Python: Division 10 Solution 2019-03-23
Introduction Loops 10 Solution 2019-03-23
Introduction Write a function 10 Solution 2019-03-23
Introduction Print Function 20 Solution 2019-03-23
Basic Data Types List Comprehensions 10 Solution 2019-03-23
Basic Data Types Find the Runner-Up Score! 10 Solution 2019-03-23
Basic Data Types Lists 10 Solution 2019-03-23
Basic Data Types Tuples 10 Solution 2019-03-23
Strings sWAP cASE 10 Solution 2019-03-23

SQL

Subdomain Challenge Points Solution Date
Basic Select Revising the Select Query I 10 Solution 2019-03-23
Basic Select Revising the Select Query II 10 Solution 2019-03-23
Basic Select Select All 10 Solution 2019-03-23
Basic Select SelectByID 10 Solution 2019-03-23
Basic Select Japanese Cities' Attributes 10 Solution 2019-03-23
Basic Select Weather Observation Station 1 15 Solution 2019-05-01
Basic Select Weather Observation Station 3 10 Solution 2019-05-01

SHELL

Subdomain Challenge Points Solution Date
Bash Let's Echo 1 Solution 2019-03-24
Bash A Personalized Echo 1 Solution 2019-03-24
Bash Looping with Numbers 2 Solution 2019-03-24
Bash The World of Numbers 2 Solution 2019-03-25