Added: a built-in data structure - list

.gitignore

@@ -107,3 +107,4 @@ venv.bak/
 .idea
 .try
 .vscode/
+data_structures/built_in_data_structures/list.ipynb

data_structures/built_in_data_structures/list.py

@@ -0,0 +1,138 @@
+# create a list
+create_list = [1, "l", 6.0, "list"]
+print("creating a list = ", create_list)
+
+# create an empty list
+empty_list = []
+print("an empty list = ", empty_list)
+
+# list index
+list_indexing = ["l", "i", "s", "t", 2, 5]
+print(list_indexing[1])
+print(list_indexing[3])
+
+# create a nested list
+nested_list = [
+    [
+        "l",
+        "i",
+    ],
+    [6, 9],
+    ["list1", "list2"],
+    "nested_list",
+]
+print("a nested list = ", nested_list)
+
+# nested indexing
+nested_list = [
+    [
+        "l",
+        "i",
+    ],
+    [6, 9],
+    ["list1", "list2"],
+    "nested_list",
+]
+print(nested_list[0][1])
+print(nested_list[1][0])
+print(nested_list[2][1])
+
+# negative indexing
+list_indexing = ["l", "i", "s", "t", 2, 5]
+print(list_indexing[-1])
+print(list_indexing[-4])
+
+# list slicing
+# syntax Lst[Initial : End : IndexJump]
+slicing = ["l", "i", "s", "t", 2, 5, 7.0, "list"]
+
+# positive indexing
+# includes elements beginning to end
+print(slicing[::])
+
+# elements from index 0th to 3rd, exclude 4th element
+print(slicing[:4:])
+
+# elements beginning from index 5th
+print(slicing[5::])
+
+# negative indexes
+# elements beginning to 3rd
+print(slicing[:-4:])
+
+# elements beginning from index 1st to 4th
+print(slicing[-7:5:])
+
+slicing = ["l", "i", "s", "t", 2, 5, 7.0, "list"]
+# slicing with index jump
+print(slicing[2:7:2])
+
+print(slicing[::-1])
+
+print(slicing[::-2])
+
+print(slicing[::3])
+
+# list built-in methods
+# append() - Adds an element at the end of the list
+append_list = ["Chase", "your", "stars"]
+append_list.append("Life is short")
+print("adding an element at the end of the list using append() = ", append_list)
+
+# clear() - Removes all the elements from the list
+clear_list = ["we", "grow", "through", "what", "we", "go", "through"]
+clear_list.clear()
+print("removes all the elements from the list using clear() method = ", clear_list)
+
+# copy() - Returns a copy of the list
+copy_list = ["simple", "life", "is", "happy", "life", "10"]
+lets_copy = copy_list.copy()
+print("copy list = ", copy_list)
+print("copied list = ", lets_copy)
+
+# count() - Returns the number of elements with the specified value
+count_list = ["Everyday", "is", "a", "a", "second", "chance"]
+counting = count_list.count("a")
+print("no of times the value a appeared in the list = ", counting)
+
+# extend() - Add the elements of a list, to the end of the current list
+extend_list1 = ["one", "day", "or", "day", "one"]
+extend_list2 = ["you", "decide"]
+extend_list1.extend(extend_list2)
+print("adding elements to the end of extend_list = ", extend_list1)
+
+# index() - Returns the index of the first element with the specified value
+index_list = ["life", "is", "short"]
+indexing = index_list.index("short")
+print("returns the index of the first occurrence of the value = ", indexing)
+
+# insert() - Adds an element at the specified position
+insert_list = ["I", "am", "Bunny"]
+insert_list.insert(2, "Honey")
+print("adding Honey at index 2 = ", insert_list)
+
+# pop() - Removes the element at the specified position
+pop_list = ["I", "M", "Possible", "Impossible"]
+pop_list.pop(3)
+print("removing the element Impossible = ", pop_list)
+
+# remove() - Removes the first item with the specified value
+remove_list = ["All", "we", "have", "is", "Now", "Future"]
+remove_list.remove("Future")
+print("removing the 'Future' element from the list = ", remove_list)
+
+# reverse() - Reverses the order of the list
+reverse_list = ["set", "yourself", "free"]
+reverse_list.reverse()
+print("reversing the order of the list = ", reverse_list)
+
+# sort() - Sorts the list
+sort_list = ["look", "at", "people", "with", "the", "eyes", "of", "your", "heart"]
+sort_list.sort()
+print("sorting the list in ascending order = ", sort_list)
+
+# list comprehension
+# syntax - new_List = [expression(element) for element in oldList if condition]
+quote = ["All", "we", "have", "is", "Now"]
+upper_quote = [x.upper() for x in quote]
+print(upper_quote)

default-14dcc113-5480-43da-922b-7f6c14072a68.ipynb

@@ -0,0 +1,6 @@
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+ "metadata": {},
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+ "nbformat_minor": 5
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