✅ Radix Sort sorts elements by processing them digit by digit. ⭐️ Keyword integers, strings with fixed-size keys ⭐️ MSD, LSD MSD Most Significant Digit counting from biggest digit ...

✅ Heap Sort Complete Binary Tree binary tree that adds from left 최댓값부터 또는 최솟값부터 정렬 전체 정렬하기 ❌ 가장 큰 값 몇 개만 필요할 때 Build complete binary tree from array Convert array into heap da...

✅ Merge Sort Divide and Conquer Divide: divide the array into two sub arrays Conquer: each subarray sorted Merge: merge back together when merging, since two sub arrays are sorted, ca...

✅ Quick Sort divide and conquer 분할 정복 ⭐️ pivot Choose a Pivot: select pivot element from array Divide(Partitioning): divide the array into two sub arrays front of pivot:...

✅ Selection Sort Select index: place to put the element is fixed(the front) decide which element to put(the smallest) first find the minimum element and place the minimum element at the beg...

✅ Insertion Sort Insert the element in the correct index start from index 2, sort the elements before index if the element is not bigger than tmp, insert the element and break the for l...

✅ Bubble Sort In the first round, compare first and second/ second and third/ third and fourth element…compare (n-1) and nth element. If it does not match the condition, swap After first ro...

✅ Computer architecture HardWare CPU RAM, HDD InputOutput: mouse, printer SoftWare System softeare: OS, compiler Application software: word, ...

✅ Implement HTTPS https://soheeparklee.github.io/posts/AWS_https/ 🟢 Result Product register time reduced on local host HTTP Postman on HTTPS postman