C++试题 难度:1(223题)
1、633.打印方阵 难度:1
https://www.51goc.com/question/viewProgram/633
2、634.分数减法 难度:1
https://www.51goc.com/question/viewProgram/634
3、635.倒背如流 难度:1
https://www.51goc.com/question/viewProgram/635
4、636.集合的差 难度:1
https://www.51goc.com/question/viewProgram/636
5、637.可表示的数 难度:1
https://www.51goc.com/question/viewProgram/637
6、638.叠罗汉 难度:1
https://www.51goc.com/question/viewProgram/638
7、639.候选人 难度:1
https://www.51goc.com/question/viewProgram/639
8、640.线段覆盖 难度:1
https://www.51goc.com/question/viewProgram/640
9、641.货币系统 难度:1
https://www.51goc.com/question/viewProgram/641
10、642.海滩 难度:1
https://www.51goc.com/question/viewProgram/642
11、643.蜈蚣 难度:1
https://www.51goc.com/question/viewProgram/643
12、644.珠宝 难度:1
https://www.51goc.com/question/viewProgram/644
13、687.分组(2019NH教师C++小学组) 难度:1
https://www.51goc.com/question/viewProgram/687
14、688.小矮人(2019NH教师C++小学组) 难度:1
https://www.51goc.com/question/viewProgram/688
15、689.打字(2019NH教师C++小学组) 难度:1
https://www.51goc.com/question/viewProgram/689
16、690.扑克牌(2019NH教师C++小学组) 难度:1
https://www.51goc.com/question/viewProgram/690
17、691.房间数量(2019NH教师C++小学组) 难度:1
https://www.51goc.com/question/viewProgram/691
18、692.中位数(2019NH教师C++小学组) 难度:1
https://www.51goc.com/question/viewProgram/692
19、745.得分(2019NH教师C++初中组) 难度:1
https://www.51goc.com/question/viewProgram/745
20、746.单元格(2019NH教师C++初中组) 难度:1
https://www.51goc.com/question/viewProgram/746
21、747.字符串排序(2019NH教师C++初中组) 难度:1
https://www.51goc.com/question/viewProgram/747
22、748.整除(2019NH教师C++初中组) 难度:1
https://www.51goc.com/question/viewProgram/748
23、749.VIP客户(2019NH教师C++初中组) 难度:1
https://www.51goc.com/question/viewProgram/749
24、750.棋盘(2019NH教师C++初中组) 难度:1
https://www.51goc.com/question/viewProgram/750
25、888.哪个大? (课程6) 难度:1
https://www.51goc.com/question/viewProgram/888
26、889.余数大小 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/889
27、890.三角形判断 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/890
28、891.数的奇偶 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/891
29、892.同奇偶 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/892
30、893.奇数个数 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/893
31、894.数的因子 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/894
32、895.地砖 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/895
33、896.糖果分堆 (课程6) 难度:1
https://www.51goc.com/question/viewProgram/896
34、897.a到b (课程7) 难度:1
https://www.51goc.com/question/viewProgram/897
35、898.2位偶数 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/898
36、899.从0开始(课程7) 难度:1
https://www.51goc.com/question/viewProgram/899
37、900.前面数 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/900
38、901.奇数 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/901
39、902.7的倍数 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/902
40、903.k的幂 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/903
41、904.等差数列 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/904
42、905.双等差数列 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/905
43、906.打印数列1 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/906
44、907.打印数列2 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/907
45、908.对称数列 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/908
46、909.个位数是7 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/909
47、910.打印数列3 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/910
48、911.倒推数列 (课程7) 难度:1
https://www.51goc.com/question/viewProgram/911
49、912.买水果 (课程8) 难度:1
https://www.51goc.com/question/viewProgram/912
50、913.1或2 (课程8) 难度:1
https://www.51goc.com/question/viewProgram/913
51、914.and和or (课程8) 难度:1
https://www.51goc.com/question/viewProgram/914
52、915.在区间里 ( 课程8 ) 难度:1
https://www.51goc.com/question/viewProgram/915
53、916.区间交集 ( 课程8 ) 难度:1
https://www.51goc.com/question/viewProgram/916
54、917.区间并集 ( 课程8 ) 难度:1
https://www.51goc.com/question/viewProgram/917
55、918.最大值 ( 课程8) 难度:1
https://www.51goc.com/question/viewProgram/918
56、919.3数排序 ( 课程8) 难度:1
https://www.51goc.com/question/viewProgram/919
57、920.求最小值 (课程8) 难度:1
https://www.51goc.com/question/viewProgram/920
58、921.排名 (课程8) 难度:1
https://www.51goc.com/question/viewProgram/921
59、922.中间数 ( 课程8) 难度:1
https://www.51goc.com/question/viewProgram/922
60、923.判断闰年 (课程8) 难度:1
https://www.51goc.com/question/viewProgram/923
61、924.天数 (课程8) 难度:1
https://www.51goc.com/question/viewProgram/924
62、926.最大值 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/926
63、927.第2大 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/927
64、928.分式最大 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/928
65、929.乘积最大 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/929
66、930.有多少因数 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/930
67、931.三角形个数 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/931
68、932.闰年数 ( 课程9) 难度:1
https://www.51goc.com/question/viewProgram/932
69、933.更多闰年数 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/933
70、934.变量内容的交换 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/934
71、935.交换空间 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/935
72、936.换号码 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/936
73、937.斐波那契数列 (课程9) 难度:1
https://www.51goc.com/question/viewProgram/937
74、938.最小公倍数的简单方法 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/938
75、939.最大公约数的简单方法 ( 课程A) 难度:1
https://www.51goc.com/question/viewProgram/939
76、940.韩信点兵 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/940
77、941.求1+2+3…+N的和 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/941
78、942.求N个输入数字的和 ( 课程A) 难度:1
https://www.51goc.com/question/viewProgram/942
79、943.求正整数和 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/943
80、944.求乘积 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/944
81、945.数的变化(课程A) 难度:1
https://www.51goc.com/question/viewProgram/945
82、946.数的数字和(课程A) 难度:1
https://www.51goc.com/question/viewProgram/946
83、947.数的颠倒 ( 课程A) 难度:1
https://www.51goc.com/question/viewProgram/947
84、948.求8的个数 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/948
85、949.删除数字0 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/949
86、950.垒三角形 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/950
87、951.水仙花数 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/951
88、952.回文数判断 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/952
89、953.分西瓜 (课程A) 难度:1
https://www.51goc.com/question/viewProgram/953
90、954.反向输出 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/954
91、955.数列求和1 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/955
92、956.数列求和2 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/956
93、957.平均分 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/957
94、958.差距 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/958
95、959.峰值 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/959
96、960.登山 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/960
97、961.删除最值 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/961
98、962.距离1 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/962
99、963.距离2 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/963
100、964.看的最远 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/964
101、965.滑雪 (课程B) 难度:1
https://www.51goc.com/question/viewProgram/965
102、966.最大最小交换1 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/966
103、967.最大最小交换2 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/967
104、968.冒泡法1 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/968
105、969.冒泡法2 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/969
106、970.数列轮换1 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/970
107、971.数列轮换2 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/971
108、972.反转数组 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/972
109、973.回文数列 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/973
110、974.救援中央城 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/974
111、975.选树 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/975
112、976.选书 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/976
113、977.共同爱好 (课程C) 难度:1
https://www.51goc.com/question/viewProgram/977
114、978.插入前面 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/978
115、979.插入中间 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/979
116、980.删除中间数 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/980
117、981.删中间2个数 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/981
118、982.删除最小值 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/982
119、983.删除一段 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/983
120、984.插入0 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/984
121、985.删除之间数 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/985
122、986.找第K小数 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/986
123、987.找3段最大值 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/987
124、988.找第K大数 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/988
125、989.不相同的数 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/989
126、990.最大的3个数和 (课程D) 难度:1
https://www.51goc.com/question/viewProgram/990
127、991.有序插入(课程E) 难度:1
https://www.51goc.com/question/viewProgram/991
128、992.插队(课程E) 难度:1
https://www.51goc.com/question/viewProgram/992
129、993.删除数组中重复的数(课程E) 难度:1
https://www.51goc.com/question/viewProgram/993
130、994.删除倍数(课程E) 难度:1
https://www.51goc.com/question/viewProgram/994
131、995.第K个点(课程E) 难度:1
https://www.51goc.com/question/viewProgram/995
132、996.前缀和(课程E) 难度:1
https://www.51goc.com/question/viewProgram/996
133、997.前缀和的逆(课程E) 难度:1
https://www.51goc.com/question/viewProgram/997
134、998.新数列(课程E) 难度:1
https://www.51goc.com/question/viewProgram/998
135、999.多次求一段和(课程E) 难度:1
https://www.51goc.com/question/viewProgram/999
136、1000.11的倍数(课程E) 难度:1
https://www.51goc.com/question/viewProgram/1000
137、1001.鸡蛋(课程E) 难度:1
https://www.51goc.com/question/viewProgram/1001
138、1002.星号矩阵(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1002
139、1003.星号三角形(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1003
140、1004.星号三角形2(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1004
141、1005.星号正方形(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1005
142、1006.星号金字塔(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1006
143、1007.星号平行四边形(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1007
144、1008.数字方阵(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1008
145、1009.左旋拉丁方阵(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1009
146、1010.数字三角形(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1010
147、1011.01矩阵(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1011
148、1012.柱型图(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1012
149、1013.右旋拉丁方阵(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1013
150、1014.数字棱形(课程F) 难度:1
https://www.51goc.com/question/viewProgram/1014
151、1015.筛选质数(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1015
152、1016.倍数(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1016
153、1017.冒泡排序(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1017
154、1018.选择排序(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1018
155、1019.插入排序(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1019
156、1020.跳房子(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1020
157、1021.分解质因子(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1021
158、1022.交换次数(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1022
159、1023.兔子(课程G) 难度:1
https://www.51goc.com/question/viewProgram/1023
160、1024.例1:顺时针旋转(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1024
161、1025.练习1:逆时针旋转(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1025
162、1026.练习2:翻转(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1026
163、1027.例2:蛇形矩阵1(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1027
164、1028.练习3:蛇形矩阵2(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1028
165、1029.练习4:蛇形矩阵3(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1029
166、1030.例3:蛇形矩阵2a(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1030
167、1031.练习5:蛇形矩阵3a(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1031
168、1032.练习6:蛇形矩阵4(课程ZA) 难度:1
https://www.51goc.com/question/viewProgram/1032
169、1033.(课程zb)例1:缺席多少人 难度:1
https://www.51goc.com/question/viewProgram/1033
170、1034.(课程zb)例2:缺席多少人(二) 难度:1
https://www.51goc.com/question/viewProgram/1034
171、1035.(课程zb)练习1:最大子矩阵的数字和 难度:1
https://www.51goc.com/question/viewProgram/1035
172、1036.(课程zb)练习2:子矩阵的数字和 难度:1
https://www.51goc.com/question/viewProgram/1036
173、1037.(课程zb)排名 难度:1
https://www.51goc.com/question/viewProgram/1037
174、1038.(课程ZC)例1:置换 难度:1
https://www.51goc.com/question/viewProgram/1038
175、1039.(课程ZC)例2:置换的“周期”变化。 难度:1
https://www.51goc.com/question/viewProgram/1039
176、1040.(课程ZC)例3:置换的“循环节” 难度:1
https://www.51goc.com/question/viewProgram/1040
177、1041.(课程ZC)练习1:置换的“循环节”算法优化 难度:1
https://www.51goc.com/question/viewProgram/1041
178、1042.(课程ZC)练习2:置换的“周期” 难度:1
https://www.51goc.com/question/viewProgram/1042
179、1043.(课程ZD)孤立的棋子 难度:1
https://www.51goc.com/question/viewProgram/1043
180、1044.(课程ZD)孤立的棋子2 难度:1
https://www.51goc.com/question/viewProgram/1044
181、1045.(课程ZD)安全的马 难度:1
https://www.51goc.com/question/viewProgram/1045
182、1046.(课程ZD)坐标排序 难度:1
https://www.51goc.com/question/viewProgram/1046
183、1047.(课程ZD)危险的马 难度:1
https://www.51goc.com/question/viewProgram/1047
国嵌c语言深入剖析班
https://www.bilibili.com/video/BV1Y7411J73m
184、1048.(课程ZD)皇后的力量 难度:1
https://www.51goc.com/question/viewProgram/1048
185、1049.(课程ZD)名次 难度:1
https://www.51goc.com/question/viewProgram/1049
186、1050.(课程ZE)翻牌游戏 难度:1
https://www.51goc.com/question/viewProgram/1050
187、1051.(课程ZE)排队 难度:1
https://www.51goc.com/question/viewProgram/1051
188、1052.(课程ZE)翻牌游戏2 难度:1
https://www.51goc.com/question/viewProgram/1052
189、1053.(课程ZE)字母队列 难度:1
https://www.51goc.com/question/viewProgram/1053
190、1054.(课程ZE)排列数字 难度:1
https://www.51goc.com/question/viewProgram/1054
191、1055.(课程ZE)字母队列2 难度:1
https://www.51goc.com/question/viewProgram/1055
192、1056.(课程ZF)差(dec) 难度:1
https://www.51goc.com/question/viewProgram/1056
193、1057.(课程ZF)求和 为 C 难度:1
https://www.51goc.com/question/viewProgram/1057
194、1058.(课程ZF)最大值 难度:1
https://www.51goc.com/question/viewProgram/1058
195、1059.(课程ZF)最近的大哥 难度:1
https://www.51goc.com/question/viewProgram/1059
196、1070.报数游戏 难度:1
https://www.51goc.com/question/viewProgram/1070
197、1071.数字计数 难度:1
https://www.51goc.com/question/viewProgram/1071
198、5805.房间数 难度:1
https://www.51goc.com/question/viewProgram/5805
199、5806.传染病 难度:1
https://www.51goc.com/question/viewProgram/5806
200、5807.好数组 难度:1
https://www.51goc.com/question/viewProgram/5807
201、5808.最小乘积 难度:1
https://www.51goc.com/question/viewProgram/5808
202、5809.恢复数组 难度:1
https://www.51goc.com/question/viewProgram/5809
203、5810.数字和 难度:1
https://www.51goc.com/question/viewProgram/5810
204、12481.抄写字母 难度:1
https://www.51goc.com/question/viewProgram/12481
205、12482.抄写数字 难度:1
https://www.51goc.com/question/viewProgram/12482
206、33122.质约数 难度:1
https://www.51goc.com/question/viewProgram/33122
207、33123.好题 难度:1
https://www.51goc.com/question/viewProgram/33123
208、33125.回文串 难度:1
https://www.51goc.com/question/viewProgram/33125
209、33126.魔法 难度:1
https://www.51goc.com/question/viewProgram/33126
210、33127.公司名称 难度:1
https://www.51goc.com/question/viewProgram/33127
211、33129.树 难度:1
https://www.51goc.com/question/viewProgram/33129
212、44931.积善成德 难度:1
https://www.51goc.com/question/viewProgram/44931
213、44933.舍小我 成大家 难度:1
https://www.51goc.com/question/viewProgram/44933
214、44936.欢呼次数 难度:1
https://www.51goc.com/question/viewProgram/44936
215、44939.无穷力量 难度:1
https://www.51goc.com/question/viewProgram/44939
216、44942.精忠报国 难度:1
https://www.51goc.com/question/viewProgram/44942
217、44948.幸运位置 难度:1
https://www.51goc.com/question/viewProgram/44948
218、44960.01串 难度:1
https://www.51goc.com/question/viewProgram/44960
219、44961.排名 难度:1
https://www.51goc.com/question/viewProgram/44961
220、44962.昂贵的字符串 难度:1
https://www.51goc.com/question/viewProgram/44962
221、44963.最小差 难度:1
https://www.51goc.com/question/viewProgram/44963
222、44964.游乐园 难度:1
https://www.51goc.com/question/viewProgram/44964
223、44965.拯救地球 难度:1
https://www.51goc.com/question/viewProgram/44965

基本算法学习-尺取法
入门级图论算法:洪水填充算法
https://blog.csdn.net/dllglvzhenfeng/article/details/123044031
【常用技巧精选】尺取法
https://blog.csdn.net/weixin_45697774/article/details/107457429
尺取法(C/C++)
https://blog.csdn.net/m0_71934846/article/details/128908113
尺取法 — 详解 + 例题模板(全)
https://blog.csdn.net/lxt_Lucia/article/details/81091597
尺取法(图文解析、初学推荐)
https://blog.csdn.net/Zhengyangxinn/article/details/104657145
入门级图论算法:洪水填充算法
https://blog.csdn.net/dllglvzhenfeng/article/details/123044031
【咸鱼君的算法题解】《深入浅出程序设计竞赛进阶篇》_P1115最大子段和
https://www.bilibili.com/video/BV1oY4y167nJ/
【咸鱼君的编程题解】《深入浅出程序设计竞赛 进阶篇》UVA11572唯一的雪花
https://www.bilibili.com/video/BV18M4y1o7Nf/
2022 CSP 考前最后一套初赛模拟题 完善程序题解析2 尺取法
https://www.bilibili.com/video/BV1st4y1j7Xb/
ABC250F赛后讲解(尺取法,计几)
https://www.bilibili.com/video/BV1SZ4y1h7LK/
NWPU2017暑期-尺取法单调队列单调栈
https://www.bilibili.com/video/BV1Xx411i7gY/
蓝桥杯python第五讲尺取法——锻造兵器
https://www.bilibili.com/video/BV1wR4y1G7uT/
尺取法 POJ 3061
https://www.bilibili.com/video/BV1624y1t7dc/
算法竞赛2.2-尺取法
https://www.bilibili.com/video/BV1s24y1j7Sa/
第四次集会-前缀和差分尺取法 【SWPUACM】
https://www.bilibili.com/video/BV1Hh411b7aH/
NOIP[C/C++]尺取法
https://www.bilibili.com/video/BV1wg4y187fx/
SWPU-ACM每周算法讲堂-尺取法(双指针)
https://www.bilibili.com/video/BV1vs411b76U/
基本算法-尺取法
https://www.bilibili.com/video/BV13v4y1y7ZT/
挑战程序设计竞赛:尺取法
https://www.bilibili.com/video/BV1j44y1y7Rw/
枚举、前缀和、差分、尺取法双指针(蓝桥杯、CPC入门适用)
https://www.bilibili.com/video/BV16A411L76V/
双指针 --- 尺取法
https://www.bilibili.com/video/BV1wN41197fh/
基本算法学习 -- 尺取法
https://blog.csdn.net/dllglvzhenfeng/article/details/130550380







