a= sorted([1,3,2,5,4])
print(a)

b= sorted([1,3,2,5,4],reverse=True)
print(b)

# 按绝对值排序
c= [-5, 2, -9, 1]
print(sorted(c,key=abs))

# 忽略大小写 按字母排序
d= ['apple','Banana','cherry']
print(sorted(d,key=lambda x:x.lower()))
print(sorted(d,key=str.lower))

# 按字典值排序
e= {'a':3,'b':2,'c':5,'d':4}
print(sorted(e.items(),key=lambda x:x[1],reverse=True))

# 按字符串长度排序
f= ['apple','Banana','cherry','date','a']
print(sorted(f,key=lambda x:len(x)))

# 多条件排序
# 先按成绩升序，再按姓名升序
# 如果成绩相同，按姓名升序
students = [
    {"name": "Elice", "score": 85},
    {"name": "Alice", "score": 85},
    {"name": "Bob", "score": 92},
    {"name": "Dave", "score": 78},
]
print(sorted(students,key=lambda x: (x["score"], x["name"])))