文件列表:

c_programming (0, 2023-06-20)
c_programming\array (0, 2023-06-20)
c_programming\array\01_find_array_element.c (1214, 2023-06-20)
c_programming\array\02_odd_find.c (2269, 2023-06-20)
c_programming\array\03_find_multi_ele.c (1170, 2023-06-20)
c_programming\array\04_subarray_max_value.c (2544, 2023-06-20)
c_programming\array\05_find_repeat_value_in_array.c (2122, 2023-06-20)
c_programming\array\06_find_repeat_values_in_array.c (2573, 2023-06-20)
c_programming\array\07_find_element_in_two_dimension_array.c (2894, 2023-06-20)
c_programming\array\08_target_sum_1.c (1225, 2023-06-20)
c_programming\array\09_remove-duplicates-from-sorted-array_26.c.c (1904, 2023-06-20)
c_programming\array\10_remove-element_27.c (2188, 2023-06-20)
c_programming\array\11_search-insert-position_35.c (3249, 2023-06-20)
c_programming\array\12_plus-one_66.c (1930, 2023-06-20)
c_programming\array\13_merge-array_88.c (1852, 2023-06-20)
c_programming\array\14_pascals-triangle_118.c (1675, 2023-06-20)
c_programming\array\15_pascals-triangle-ii_119.c (1579, 2023-06-20)
c_programming\array\16_best-time-to-buy-and-sell-stock_121.c (1541, 2023-06-20)
c_programming\array\17_single-number_136.c (1361, 2023-06-20)
c_programming\array\18_majority-element_169.c (1387, 2023-06-20)
c_programming\array\19_contains-duplicate_217.c (1302, 2023-06-20)
c_programming\array\20_contains-duplicate-ii_219.c (1298, 2023-06-20)
c_programming\array\21_container-with-most-water_11.c (1364, 2023-06-20)
c_programming\array\22_3sum_15.c (1878, 2023-06-20)
c_programming\array\23_summary-ranges_228.c (1419, 2023-06-20)
c_programming\array\24_missing-number_268.c (1366, 2023-06-20)
c_programming\array\25_3sum-closest_16.c (1251, 2023-06-20)
c_programming\array\26_first-bad-version_278.c (1154, 2023-06-20)
c_programming\array\27_remove-zeros_283.c (965, 2023-06-20)
c_programming\array\28_4sum_18.c (1980, 2023-06-20)
c_programming\array\29_counting-bits_338.c (929, 2023-06-20)
c_programming\array\30_intersection-of-two-arrays_349.c (1818, 2023-06-20)
c_programming\array\31_third-maximum-number_414.c (1203, 2023-06-20)
c_programming\array\32_find-all-numbers-disappeared-in-an-array_448.c (849, 2023-06-20)
c_programming\array\33_assign-cookies_455.c (1340, 2023-06-20)
c_programming\array\34_island-perimeter_463.c (1799, 2023-06-20)
... ...

# Leetcode and Algo Daily Training ## Direction 截止到2023年3月10日,做以下规则变更: * 不再RUST和C进行同步; * 为了熟悉RUST语言,RUST继续进行leetcode简单等级的题目; * 为了熟悉算法及数据结构的使用,使用C进行leetcode的中等的题目; * C按照算法及数据结构的类别进行专题刷; * RUST延续C的简单题目顺序继续往下进行。 ## [基本数据结构的C语言实现](https://github.com/carloscn/structstudy/tree/master/c_programming/utils) C语言无法像是高级计算机语言对基础数据结构有一部分的实现,而一些算法需要基于这些数据结构,故在本工程中的utils中实现基本的数据结构,在算法实现中可以调用这些数据结构的基本方法。通过接口封装的方式,可以轻松调用这些方法,基本数据结构还在扩充中。 * [栈(stack)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/stack.c) * [队列(queue)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/queue.c) * [链表(linkedlist)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/linklist.c) * [字符串列表(stringlist)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/strlist.c) * [动态数组(buffer)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/buffer.c) * [动态数组列表(bufferlist)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/bufferlist.c) * [二叉树/堆(binarytree/heap)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/binary_tree.c) * [多叉树/堆(multitree/heap)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/multi_tree.c) * [哈希映射表(hash mapping)](https://github.com/carloscn/structstudy/blob/master/c_programming/utils/hash_map.c) ## [数组](https://github.com/carloscn/structstudy/tree/master/c_programming/array): * [在数组中查找元素](https://github.com/carloscn/structstudy/issues/1) * [调整数组顺序使奇数位于偶数前面(冒泡排序)](https://github.com/carloscn/structstudy/issues/2) * [数组中次数出现超过一半的数字(摩尔投票法)](https://github.com/carloscn/structstudy/issues/3) * [连续子数组的最大和 (思维与技巧)](https://github.com/carloscn/structstudy/issues/4) * [数组中重复的数字(数组值在数组索引范围内)(思维与技巧)](https://github.com/carloscn/structstudy/issues/5) * [数组中重复的数字(不修改原始数组)(二分法)](https://github.com/carloscn/structstudy/issues/6) * [在二维数组中的查找(思维与技巧)](https://github.com/carloscn/structstudy/issues/7) * [排序][对数组内的元素进行排序(冒泡排序法)](https://github.com/carloscn/structstudy/issues/9) * [排序][对数组内的元素进行排序(选择排序法)](https://github.com/carloscn/structstudy/issues/10) * [排序][对数组内的元素进行排序(插入排序法)](https://github.com/carloscn/structstudy/issues/11) * [排序][递归][对数组内的元素进行排序(快速排序法)](https://github.com/carloscn/structstudy/issues/12) * [两数之和(leetcode-1)](https://github.com/carloscn/structstudy/issues/27) [2022-10-13] * [用栈实现队列(leetcode-232)implement-queue-using-stacks](https://github.com/carloscn/structstudy/issues/29) [2022-10-14] * [用队列实现栈(leetcode-225)implement-stack-using-queues](https://github.com/carloscn/structstudy/issues/30) [2022-10-14] * [颜色分类-荷兰三色旗(leetcode-75)sort-colors](https://github.com/carloscn/structstudy/issues/32) [2022-10-15] * [leetcode26:删除有序数组中的重复项(remove-duplicates-from-sorted-array)](https://github.com/carloscn/structstudy/issues/38) [2022-10-24] * [leetcode27:移除元素(remove-element)](https://github.com/carloscn/structstudy/issues/39) [2022-10-25] * [leetcode35:搜索插入位置(search-insert-position)](https://github.com/carloscn/structstudy/issues/40) [2022-10-26] * [leetcode66:加一(plus-one)](https://github.com/carloscn/structstudy/issues/41) [2022-10-27] * [leetcode88:合并两个有序数组(merge-sorted-array)](https://github.com/carloscn/structstudy/issues/46) [2022-10-31] * [leetcode118:杨辉三角(pascals-triangle)](https://github.com/carloscn/structstudy/issues/47) [2022-11-01] * [leetcode119:杨辉三角 II(pascals-triangle-ii)](https://github.com/carloscn/structstudy/issues/48) [2022-11-02] * [leetcode121:买卖股票的最佳时机(best-time-to-buy-and-sell-stock)](https://github.com/carloscn/structstudy/issues/49) [2022-11-03] * [leetcode136:只出现一次的数字(single-number)](https://github.com/carloscn/structstudy/issues/50) [2022-11-04] * [leetcode169:多数元素(majority-element)](https://github.com/carloscn/structstudy/issues/54) [2022-11-08] * [leetcode217:存在重复元素(contains-duplicate)](https://github.com/carloscn/structstudy/issues/63) [2022-11-17] * [leetcode11:盛最多水的容器(container-with-most-water)](https://github.com/carloscn/structstudy/issues/65) [2022-11-19] * [leetcode15:三数之和(3sum)](https://github.com/carloscn/structstudy/issues/66) [2022-11-20] * [leetcode228:汇总区间(summary-ranges)](https://github.com/carloscn/structstudy/issues/67) [2022-11-21] * [leetcode268:丢失的数字(missing-number)](https://github.com/carloscn/structstudy/issues/71) [2022-11-25] * [leetcode278:第一个错误的版本(first-bad-version)](https://github.com/carloscn/structstudy/issues/73) [2022-11-28] * [leetcode283:移动零元素(move-zeroes)](https://github.com/carloscn/structstudy/issues/74) [2022-11-29] * [leetcode18:四数之和(4sum)](https://github.com/carloscn/structstudy/issues/78) [2022-12-04] * [leetcode338:比特位计数(counting-bits)](https://github.com/carloscn/structstudy/issues/80) [2022-12-06] * [leetcode349:两个数组的交集(intersection-of-two-arrays)](https://github.com/carloscn/structstudy/issues/84) [2022-12-11] * [leetcode448:找到所有数组中消失的数字(find-all-numbers-disappeared-in-an-array)](https://github.com/carloscn/structstudy/issues/99) [2023-01-14] * [leetcode455:分发饼干(assign-cookies)](https://github.com/carloscn/structstudy/issues/100) [2023-01-15] * [leetcode463:岛屿的周长(island-perimeter)](https://github.com/carloscn/structstudy/issues/103) [2023-01-18] * [leetcode485:最大连续1的个数(max-consecutive-ones)](https://github.com/carloscn/structstudy/issues/106) [2023-01-22] * [leetcode492:构造矩形(construct-the-rectangle)](https://github.com/carloscn/structstudy/issues/107) [2023-01-23] * [leetcode495:提莫攻击(teemo-attacking) ](https://github.com/carloscn/structstudy/issues/108) [2023-01-24] * [leetcode496:下一个更大元素 I(next-greater-element-i)](https://github.com/carloscn/structstudy/issues/109) [2023-01-28] * [leetcode506:相对名次(relative-ranks)](https://github.com/carloscn/structstudy/issues/112) [2023-02-01] * [leetcode***3:子数组最大平均数 I(maximum-average-subarray-i)](https://github.com/carloscn/structstudy/issues/116) [2023-02-06] * [leetcode***5:错误的集合(set-mismatch)](https://github.com/carloscn/structstudy/issues/117) [2023-02-07] * [leetcode674:最长连续递增序列(longest-continuous-increasing-subsequence)](https://github.com/carloscn/structstudy/issues/119) [2023-02-09] * [leetcode697:数组的度(degree_of_an_array_697)](https://github.com/carloscn/structstudy/issues/123) [2023-02-13] * [leetcode724:寻找数组的中心下标(find_pivot_index_724)](https://github.com/carloscn/structstudy/issues/125) [2023-02-17] * [leetcode746:使用最小花费爬楼梯(min_cost_climbing_stairs_746)](https://github.com/carloscn/structstudy/issues/127) [2023-02-19] * [leetcode747:至少是其他数字两倍的最大数(largest_number_at_least_twice_of_others_747)](https://github.com/carloscn/structstudy/issues/128) [2023-02-20] * [leetcode766:托普利茨矩阵(toeplitz_matrix_766)](https://github.com/carloscn/structstudy/issues/130) [2023-02-23] * [leetcode821:字符的最短距离(shortest_distance_to_a_character_821)](https://github.com/carloscn/structstudy/issues/134) [2023-02-27] * [leetcode34:在排序数组中查找元素的第一个和最后一个位置(find_first_and_last_position_of_element_in_sorted_array_34)](https://github.com/carloscn/structstudy/issues/136) [2023-02-28] * [leetcode38:外观数列(count-and-say)](https://github.com/carloscn/structstudy/issues/137) [2023-03-02] * [leetcode832:翻转图像(flipping_an_image_832)](https://github.com/carloscn/structstudy/issues/145) [2023-03-12] * [leetcode836:矩形重叠(rectangle_overlap_836)](https://github.com/carloscn/structstudy/issues/146) [2023-03-13] * [leetcode867:转置矩阵(transpose-matrix) ](https://github.com/carloscn/structstudy/issues/152) [2023-03-18] * [leetcode896:单调数列(monotonic_array)](https://github.com/carloscn/structstudy/issues/159) [2023-03-22] * [leetcode905:按奇偶排序数组(sort_array_by_parity)](https://github.com/carloscn/structstudy/issues/160) [2023-03-23] * [leetcode922:按奇偶排序数组 II(sort-array-by-parity-ii)](https://github.com/carloscn/structstudy/issues/165) [2023-03-26] * [leetcode941:有效的山脉数组(valid_mountain_array)](https://github.com/carloscn/structstudy/issues/169) [2023-03-30] * [leetcode977:有序数组的平方(squares_of_a_sorted_array)](https://github.com/carloscn/structstudy/issues/174) [2023-04-02] * [leetcode***9:数组形式的整数加法(add_to_array_form_of_integer)](https://github.com/carloscn/structstudy/issues/175) [2023-04-03] * [leetcode1005:K 次取反后最大化的数组和(maximize_sum_of_array_after_k_negations)](https://github.com/carloscn/structstudy/issues/178) [2023-04-06] * [leetcode1046:最后一块石头的重量(last_stone_weight)](https://github.com/carloscn/structstudy/issues/180) [2023-04-08] * [leetcode1047:删除字符串中的所有相邻重复项(remove_all_adjacent_duplicates_in_string)](https://github.com/carloscn/structstudy/issues/181) [2023-04-09] * [leetcode1051:高度检查器(height_checker)](https://github.com/carloscn/structstudy/issues/183) [2023-04-10] * [leetcode56:合并区间(merge_intervals)](https://github.com/carloscn/structstudy/issues/182) [2023-04-09] * [leetcode1089:复写零(duplicate_zeros)](https://github.com/carloscn/structstudy/issues/185) [2023-04-13] * [leetcode1103:分糖果 II(distribute_candies_to_people)](https://github.com/carloscn/structstudy/issues/186) [2023-04-14] * [leetcode80:删除有序数组中的重复项 II(remove-duplicates-from-sorted-array-ii)](https://github.com/carloscn/structstudy/issues/188) [2023-04-15] * [leetcode1122:数组的相对排序(relative-sort-array)](https://github.com/carloscn/structstudy/issues/189) [2023-04-16] * [leetcode1128:等价多米诺骨牌对的数量(number_of_equivalent_domino_pairs)](https://github.com/carloscn/structstudy/issues/190) [2023-04-17] * [leetcode1184:公交站间的距离(distance_between_bus_stops)](https://github.com/carloscn/structstudy/issues/192) [2023-04-19] * [leetcode1207:独一无二的出现次数(unique-number-of-occurrences)](https://github.com/carloscn/structstudy/issues/193) [2023-04-20] * [leetcode1200:最小绝对差(minimum_absolute_difference)](https://github.com/carloscn/structstudy/issues/194) [2023-04-21] * [leetcode1252:奇数值单元格的数目(cells_with_odd_values_in_a_matrix)](https://github.com/carloscn/structstudy/issues/1***) [2023-04-24] * [leetcode1260:二维网格迁移(shift_2d_grid)](https://github.com/carloscn/structstudy/issues/199) [2023-04-25] * [leetcode1287:有序数组中出现次数超过25%的元素(element-appearing-more-than-25-in-sorted-array)](https://github.com/carloscn/structstudy/issues/201) [2023-04-27] * [leetcode1299:将每个元素替换为右侧最大元素(replace-elements-with-greatest-element-on-right-side)](https://github.com/carloscn/structstudy/issues/204) [2023-04-30] * [leetcode1313:解压缩编码列表(decompress-run-length-encoded-list)](https://github.com/carloscn/structstudy/issues/206) [2023-05-02] * [leetcode1331:数组序号转换(rank-transform-of-an-array)](https://github.com/carloscn/structstudy/issues/209) [2023-05-05] * [leetcode1346: 检查整数及其两倍数是否存在(check-if-n-and-its-double-exist)](https://github.com/carloscn/structstudy/issues/212) [2023-05-08] * [leetcode1351:统计有序矩阵中的负数(count-negative-numbers-in-a-sorted-matrix)](https://github.com/carloscn/structstudy/issues/213) [2023-05-09] * [leetcode1356:根据数字二进制下 1 的数目排序(sort-integers-by-the-number-of-1-bits)](https://github.com/carloscn/structstudy/issues/214) [2023-05-10] * [leetcode1365:有多少小于当前数字的数字(how-many-numbers-are-smaller-than-the-current-number)](https://github.com/carloscn/structstudy/issues/215) [2023-05-11] * [leetcode1380:矩阵中的幸运数(lucky-numbers-in-a-matrix)](https://github.com/carloscn/structstudy/issues/216) [2023-05-12] * [leetcode1385:两个数组间的距离值(find-the-distance-value-between-two-arrays)](https://github.com/carloscn/structstudy/issues/217) [2023-05-13] * [leetcode1389:按既定顺序创建目标数组(create-target-array-in-the-given-order)](https://github.com/carloscn/structstudy/issues/219) [2023-05-14] * [leetcode73:矩阵置零(set-matrix-zeroes)](https://github.com/carloscn/structstudy/issues/218) [2023-05-13] * [leetcode1394:找出数组中的幸运数(find-lucky-integer-in-an-array)](https://github.com/carloscn/structstudy/issues/220) [2023-05-15] * [leetcode1403:非递增顺序的最小子序列(minimum-subsequence-in-non-increasing-order)](https://github.com/carloscn/structstudy/issues/221) [2023-05-16] * [leetcode1417: 重新格式化字符串(reformat-the-string)](https://github.com/carloscn/structstudy/issues/223) [2023-05-18] * [leetcode1431:拥有最多糖果的孩子(kids-with-the-greatest-number-of-candies)](https://github.com/carloscn/structstudy/issues/225) [2023-05-20] * [leetcode82:删除排序链表中的重复元素 II(remove-duplicates-from-sorted-list-ii)](https://github.com/carloscn/structstudy/issues/226) [2023-05-20] * [leetcode1437:是否所有 1 都至少相隔 k 个元素(check-if-all-1s-are-at-least-length-k-places-away)](https://github.com/carloscn/structstudy/issues/228) [2023-05-22] * [leetcode1460:通过翻转子数组使两个数组相等(make-two-arrays-equal-by-reversing-subarrays)](https://github.com/carloscn/structstudy/issues/231#top) [2023-05-25] * [leetcode14***:数组中两元素的最大乘积(maximum-product-of-two-elements-in-an-array)](https://github.com/carloscn/structstudy/issues/232) [2023-05-26] * [leetcode1470:重新排列数组(shuffle-the-array)](https://github.com/carloscn/structstudy/issues/233) [2023-05-27] * [leetcode1475:商品折扣后的最终价格(final-prices-with-a-special-discount-in-a-shop)](https://github.com/carloscn/structstudy/issues/234) [2023-05-28] * [leetcode1480:一维数组的动态和(running-sum-of-1d-array)](https://github.com/carloscn/structstudy/issues/235) [2023-05-29] * [leetcode1502:判断能否形成等差数列(can-make-arithmetic-progression-from-sequence)](https://github.com/carloscn/structstudy/issues/237) [2023-05-31] * [leetcode1534:统计好三元组(count-good-triplets)](https://github.com/carloscn/structstudy/issues/240) [2023-06-03] * [leetcode1539:第 k 个缺失的正整数(kth-missing-positive-number)](https://github.com/carloscn/structstudy/issues/242) [2023-06-04] * [leetcode89:格雷编码(gray-code)](https://github.com/carloscn/structstudy/issues/241) [2023-06-03] * [leetcode1550:存在连续三个奇数的数组(three-consecutive-odds)](https://github.com/carloscn/structstudy/issues/244) [2023-06-07] * [leetcode1560:圆形赛道上经过次数最多的扇区(most-visited-sector-in-a-circular-track)](https://github.com/carloscn/structstudy/issues/246) [2023-06-09] * [leetcode1572:矩阵对角线元素的和(matrix-diagonal-sum)](https://github.com/carloscn/structstudy/issues/247) [2023-06-12] * [leetcode1588:所有奇数长度子数组的和(sum-of-all-odd-length-subarrays)](https://github.com/carloscn/structstudy/issues/250) [2023-06-15] * [leetcode1608:特殊数组的特征值(special-array-with-x-elements-greater-than-or-equal-x)](https://github.com/carloscn/structstudy/issues/253) [2023-06-18] * [leetcode1619:删除某些元素后的数组均值(mean-of-array-after-removing-some-elements)](https://github.com/carloscn/structstudy/issues/255) [2023-06-20] ## [字符串](https://github.com/carloscn/structstudy/tree/master/c_programming/str): * [替换字符串空格(双指针法)](https://github.com/carloscn/structstudy/issues/8) * [最后一个单词的长度 (leetcode-58) ](https://github.com/carloscn/structstudy/issues/26) [2022-10-12] * [回文数(leetcode-9)](https://github.com/carloscn/structstudy/issues/28) [2022-10-13] * [罗马数字转整数(leetcode-13)roman-to-integer](https://github.com/carloscn/structstudy/issues/33) [2022-10-17] * [最长公共前缀(leetcode-14)longest-common-prefix](https://github.com/carloscn/structstudy/issues/34) [2022-10-17] * [有效的括号(leetcode-20)valid-parentheses](https://github.com/carloscn/structstudy/issues/35) [2022-10-18] * [无重复字符的最长子串(leetcode-3)longest-substring-without-repeating-characters](https://github.com/carloscn/structstudy/issues/36) [2022-10-18] * [leetcode67:二进制求和(add-binary)](https://github.com/carloscn/structstudy/issues/42) [2022-10-28] * [leetcode168:Excel表列名称(excel-sheet-column-title)](https://github.com/carloscn/structstudy/issues/53) [2022-11-07] * [leetcode171:Excel 表列序号(excel-sheet-column-number)](https://github.com/carloscn/structstudy/issues/55) [2022-11-09] * [leetcode190:颠倒二进制(reverse-bits)](https://github.com/carloscn/structstudy/issues/56) [2022-11-10] * [leetcode191:位1的个数(number-of-1-bits)](https://github.com/carloscn/structstudy/issues/57) [2022-11-11] * [leetcode8:字符串转换整数 (atoi)](https://github.com/carloscn/structstudy/issues/59) [2022-11-13] * [leetcode205:同构字符串(isomorphic-strings)](https://github.com/carloscn/structstudy/issues/62) [2022-11-16] * [leetcode242:有效的字母异位词(valid-anagram)](https://github.com/carloscn/structstudy/issues/69) [2022-11-23] * [leetcode290:单词规律(word-pattern)](https://github.com/carloscn/structstudy/issues/75) [2022-11-30] * [leetcode17:电话号码的字母组合(letter-combinations-of-a-phone-number)](https://github.com/carloscn/structstudy/issues/77) [2022-12-03] * [leetcode344:反转字符串(reverse-string)](https://github.com/carloscn/structstudy/issues/82) [2022-12-09] * [leetcode345:反转字符串中的元音字母(reverse-vowels-of-a-string)](https://github.com/carloscn/structstudy/issues/83) [2022-12-10] * [leetcode383:赎金信(ransom-note)](https://github.com/carloscn/structstudy/issues/87) [2022-12-15] * [leetcode389:找不同(find-the-difference)](https://github.com/carloscn/structstudy/issues/89) [2022-12-18] * [leetcode392:判断子序列(is-subsequence](https://github.com/carloscn/structstudy/issues/90) [2022-12-20] * [leetcode401:二进制手表(binary-watch)](https://github.com/carloscn/structstudy/issues/91) [2022-12-21] * [leetcode405:数字转换为十六进制数(convert-a-number-to-hexadecimal)](https://github.com/carloscn/structstudy/issues/92) [2022-12-23] * [leetcode409:最长回文串(longest-palindrome](https://github.com/carloscn/structstudy/issues/93) [2022-12-24] * [leetcode412:Fizz Buzz](https://github.com/carloscn/structstudy/issues/94) [2022-12-25] * [leetcode414:第三大的数(third-maximum-number)](https://github.com/carloscn/structstudy/issues/95) [2023-01-03] * [leetcode415:字符串相加(add-strings)](https://github.com/carloscn/structstudy/issues/96) [2023-01-07] * [leetcode434:字符串中的单词数(number-of-segments-in-a-string)](https://github.com/carloscn/structstudy/issues/97) [2023-01-08] * [leetcode441:排列硬币(arranging-coins)](https://github.com/carloscn/structstudy/issues/***) [2023-01-10] * [leetcode459:重复的子字符串(repeated-substring-pattern)](https://github.com/carloscn/structstudy/issues/101) [2023-01-16] * [leetcode482:密钥格式化(license-key-formatting)](https://github.com/carloscn/structstudy/issues/105) [2023-01-21] * [leetcode500:键盘行(keyboard-row)](https://github.com/carloscn/structstudy/issues/110) [2023-01-30] * [leetcode504:七进制数(base-7)](https://github.com/carloscn/structstudy/issues/111) [2023-01-31] * [leetcode520:检测大写字母(detect-capital)](https://github.com/carloscn/structstudy/issues/113) [2023-02-03] * [leetcode521:最长特殊序列I(longest-uncommon-subsequence-i)](https://github.com/carloscn/structstudy/issues/114) [2023-02-04] * [leetcode541:反转字符串 II(reverse-string-ii)](https://github.com/carloscn/structstudy/issues/115) [2023-02-5] * [leetcode657:机器人能否返回原点(robot-return-to-origin)](https://github.com/carloscn/structstudy/issues/118) [2023-02-08] * [leetcode680:验证回文串 II(valid_palindrome_ii)](https://github.com/carloscn/structstudy/issues/120) [2023-02-10] * [leetcode696:计数二进制字符串(count-binary-substrings)](https://github.com/carloscn/ ... ...

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