3.13美团笔试
第一题：列表翻转（直接转就行）
n, m = map(int, input().split()) aa = [] for i in range(n): aa.append([int(j) for j in input().split()]) res = [[0] * n for _ in range(m)] for i in range(n): for j in range(m): res[j][i] = aa[i][j] for i in range(m): for j in range(n): if j != n-1: print(res[i][j], end=" ") else: print(res[i][j])
s = input() res = [] cur = "" i = 0 while i < len(s): if '0' <= s[i] <= '9': cur += s[i] else: if cur != "": res.append(int(cur)) cur = "" i += 1 if cur != "": res.append(int(cur)) res.sort() for n in res: print(n)
> 直接找数，最后排个序
> 看别的笔经，好像存在大数问题，（python真香了） =_=第三题：众数问题。。（卡数据了，只过了73%，感觉已经挺优的了啊，滑窗思想，心碎了）
n, k = map(int, input().split())
nums = [int(i) for i in input().split()]
#print(nums)
cur_dic = {}
res = []
if k == 1:
for i in nums:
print(i)
elif k == 2:
for i in range(0, len(nums)-1):
if nums[i] <= nums[i+1]:
print(nums[i])
else:
print(nums[i+1])
else:
for i in range(n):
if cnt >= k:
print(cur_dic)
dic_cpy = sorted(cur_dic.items(), key=lambda x: (-x[1], x[0]))
# print(cur_dic)
res.append(dic_cpy[0][0])
if cur_dic[nums[i]] >= 1:
cur_dic[nums[i]] -= 1
else:
cur_dic.pop(nums[i])
if nums[i] not in cur_dic:
cur_dic[nums[i]] = 1
else:
cur_dic[nums[i]] += 1
#print(cur_dic)
cnt += 1
for j in res:
print(j)
剩下两道图，直接放弃了，最后一个读懂了，就是时间不够了，加上图做得少，还需加强练习！！！呜呜呜，好惨，给个实习机会吧！
