All Question are sort by finished order.
PS: filename stand for the approaching times of the solution.e.g. :
1.<file-type>stand for my first approaching.
Easy Problems
Count: 22
| No. | Title | Code | Remark |
|---|---|---|---|
| 1 | two-sum | code | |
| 1512 | number-of-good-pairs | code | |
| 496 | next-greater-element-i | code | monotonic stack (re) |
| 1217 | minimum-cost-to-move-chips-to-the-same-position | code | |
| 1047 | remove-all-adjacent-duplicates-in-string | code | |
| 118 | pascals-triangle | code | |
| 217 | contains-duplicate | code | |
| 242 | valid-anagram | code | |
| 125 | valid-palindrome | code | |
| 26 | remove-duplicates | code | |
| 9 | palindrome-number | code | |
| 206 | reverse-linked-list | code | |
| 21 | merge-two-sorted-lists | code | |
| 141 | linked-list-cycle | code | |
| 27 | remove-element | code | |
| 13 | roman-to-integer | code | |
| 1768 | merge-strings-alternately | code | |
| 1071 | greatest-common-divisor-of-strings | code | ambiguous problem |
| 1431 | kids-with-the-greatest-number-of-candies | code | |
| 290 | word-pattern | code | |
| 20 | valid-parentheses | code |
Medium Problems
Count: 20
| No. | Title | Code | Remark |
|---|---|---|---|
| 3 | longest-substring-without-repeating-characters | code | |
| 503 | next-greater-element-ii | code | monotonic stack (re) |
| 73 | set-matrix-zeroes | code | |
| 120 | triangle | code | |
| 49 | group-anagrams | code | |
| 347 | top-k-frequent-elements | code | |
| 238 | product-of-array-except-self | code | |
| 36 | valid-sudoku | code | |
| 128 | longest-consecutive-sequence | code | |
| 167 | two-sum-ii-input-array-is-sorted | code | (re) |
| 15 | 3sum | code | |
| 11 | container-with-most-water | code | |
| 2 | add-two-numbers | code | explain book[v] |
| 6 | Zigzag Conversion | code | |
| 7 | Reverse Integer | code | |
| 8 | String to Integer (atoi) | code | ambiguous problem |
| 151 | Reverse Words in a String | code | fake medium problem |
| 80 | Remove Duplicates from Sorted Array II | code | peak |
| 451 | Sort Characters By Frequency | code | slow but fancy |
Explained Book
If I look back at the problems I solved a couple of months ago,
I had a hard time understanding my solutions. So I decided to write a book to explain the problems I solved.
| No. | Title | Date |
|---|---|---|
| 2 | Add Two Numbers | 2024/01/23 |