EASY LEVEL (1–10)

1. Create Dictionary

   Problem: Create a dictionary with keys as names and values as ages. Return the dictionary.

Input:
names= ["Amit","Riya"]
ages= [25,30]

Output:
{"Amit":25,"Riya":30}

1. Access Value

   Problem: Return value of given key from dictionary.

Input:
d= {"a":10,"b":20}
key="b"

Output:
20

1. Check Key Exists

   Problem: Return true if key exists in dictionary.

Input:
d= {"x":1,"y":2}
key="x"

Output:
true

1. Count Keys

   Problem: Return total number of keys in dictionary.

Input:
d= {"a":1,"b":2,"c":3}

Output:
3

1. Sum of Values

   Problem: Return sum of all dictionary values.

Input:
d= {"a":10,"b":20,"c":30}

Output:
60

1. Update Value

   Problem: Update value of a given key.

Input:
d= {"a":10}
key="a"
new_value=50

Output:
{"a":50}

1. Delete Key

   Problem: Remove a key from dictionary.