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    Python Dictionary Exercise

    Last Updated : 10 Sep, 2025
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    Basic Dictionary Programs

    • Sort by Key or Value
    • Handling missing keys
    • Keys having multiple inputs
    • Find sum of all items
    • Find size of a Dictionary
    • Sorting – Using itemgetter
    • Sorting – Using lambda function
    • Merging two Dictionaries
    • Create grade calculator
    • Insertion at beginning in OrderedDict
    • Check order of character using OrderedDict( )
    • Common elements in sorted arrays by dictionary intersection
    • Dictionary and counter to find winner of election
    • Key with maximum unique values
    • Find all duplicate characters in string
    • Group Similar items to Dictionary Values List
    • K’th Non-repeating Character
    • Replace String by Kth value
    • Remove a key from dictionary
    • Replace words from Dictionary
    • Remove Key Words
    • Remove duplicates words from a given sentence
    • Remove duplicate values across Values
    • Find mirror characters in a string
    • Counting frequencies using dictionary
    • Values Mean
    • Counter and dictionary intersection
    • Dictionary, set and counter to check if frequencies can become same
    • Scraping And Finding Ordered Words
    • Possible Words using given characters
    • Maximum record value key
    • Extract values of Particular Key in Nested Values

    Basic Practice Problems

    • Intro to Dictionary
    • Dictionary
    • Longest Subarray with Sum K
    • Sort According to an Array

    Conversion of dictionary

    • Convert Key-Value list Dictionary to List of Lists
    • Convert List to List of dictionaries
    • Convert Lists of List to Dictionary
    • Convert List of Dictionaries to List of Lists
    • Convert key-values list to flat dictionary
    • Convert a list of Tuples into Dictionary
    • Convert Nested dictionary to Mapped Tuple
    • Convert string to dictionary
    • Convert dictionary to K sized dictionaries
    • Convert Matrix to dictionary

    Advance Dictionary Programs

    • Create Nested Dictionary using List
    • Swapping Hierarchy in Nested Dictionaries
    • Inversion in nested dictionary
    • Reverse Dictionary Keys Order
    • Extract Key’s Value, if Key Present in List and Dictionary
    • Remove keys with Values Greater than K ( Including mixed values )
    • Remove keys with substring values
    • Dictionary with maximum count of pairs
    • Append Dictionary Keys and Values
    • Extract Unique values
    • Keys associated with Values
    • Filter dictionary values in heterogeneous
    • Print anagrams together
    • Check if binary representations of two numbers are anagram
    • Counter to find size of largest subset of anagram word
    • Count of groups having largest size while grouping according to sum of its digits
    • Sort Dictionary key and values List
    • Sort Dictionary by Values Summation
    • Sort dictionaries list by Key’s Value list index
    • Sort Nested keys by Value
    • Scoring Matrix
    • Factors Frequency
    • Count distinct substrings of a string
    • Build an undirected graph and finding shortest path
    • LRU Cache using OrderedDict

    Advance Practice Problems

    • First Repeating Element
    • Print Anagrams Together
    • Array Pair Sum Divisibility
    • Check Equal Arrays
    • Check Arithmetic Progression
    • LFU Cache
    • LRU Cache
    • Phone directory
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    Article Tags :
    • Python
    • Python dictionary-programs

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