• Skip to primary navigation
  • Skip to content
  • Skip to primary sidebar
  • Skip to secondary sidebar

GoHired

Interview Questions asked in Google, Microsoft, Amazon

Join WeekEnd Online Batch from 4-April-2020 on How to Crack Coding Interview in Just 10 Weeks : Fees just 20,000 INR

  • Home
  • Best Java Books
  • Algorithm
  • Internship
  • Certificates
  • About Us
  • Contact Us
  • Privacy Policy
  • Array
  • Stack
  • Queue
  • LinkedList
  • DP
  • Strings
  • Tree
  • Mathametical
  • Puzzles
  • Graph

Python List

November 19, 2014 by Dhaval Dave

The list is a most versatile datatype available in Python which can be written as a list of comma-separated values (items) between square brackets. Good thing about a list is that items in a list need not all have the same type.

Creating a list is as simple as putting different comma-separated values between squere brackets. For example:

#Array/List Defination : 
shopping_list = [1,2,3,”Blog”,”Gohired”];

Accessing Values in Lists:

list1 = [‘A’, ‘B’, 1, 2];
list2 = [1, 2, 3, 4, 5, 6, 7 ];
print “list1[0]: “, list1[0]
print “list2[1:5]: “, list2[1:5]


>> list1[0]:  A
>> list2[1:5]:  [2, 3, 4, 5]

Adding/Deleting/Updating Lists:

shopping_list = [1,2,3];

#Array/List operations

shopping_list.append(4); //Adding 
shopping_list.remove(1); //removing 
shopping_list[0]=’DD’// Updating
del shopping_list[3]
print(shopping_list);

List Operations:

len([1, 2, 3]) 3 Length
[1, 2, 3] + [4, 5, 6] [1, 2, 3, 4, 5, 6] Concatenation
[‘Hi!’] * 4 [‘Hi!’, ‘Hi!’, ‘Hi!’, ‘Hi!’] Repetition
3 in [1, 2, 3] True Membership
for x in [1, 2, 3]: print x, 1 2 3 Iteration

List Functions & Methods:

cmp(list1, list2) Compares elements of both lists.
len(list)  Gives the total length of the list.
max(list) Returns item from the list with max value.
min(list) Returns item from the list with min value.
list(seq) Converts a tuple into list.

list.append(obj) : Appends object obj to list
list.count(obj) : Returns count of how many times obj occurs in list
list.extend(seq) : Appends the contents of seq to list
list.index(obj) : Returns the lowest index in list that obj appears
list.insert(index, obj) : Inserts object obj into list at offset index
list.pop(obj=list[-1]) : Removes and returns last object or obj from list
list.remove(obj) : Removes object obj from list
list.reverse() : Reverses objects of list in place
list.sort([func]) : Sorts objects of list, use compare func if given

Examples

shopping_list = [1,2,3];
print shopping_list;
#Array/List operations
shopping_list.append(4);
print(shopping_list);
shopping_list.remove(1);
print(shopping_list);
shopping_list.insert(3,’DD’);
shopping_list.append(4);
print(shopping_list);
print shopping_list.index(4);

Try others like pop, sort and reverse
Guess Output or check it here http://ideone.com/0iA0tM

Similar Articles

Filed Under: Interview Questions Tagged With: Array, python

Reader Interactions

Primary Sidebar

Join WeekEnd Online/Offline Batch from 4-April-2020 on How to Crack Coding Interview in Just 10 Weeks : Fees just 20,000 INR

Join WeekEnd Online/Offline Batch from 4-April-2020

WhatsApp us

Secondary Sidebar

Custom Search

  • How I cracked AMAZON
  • LeetCode
  • Adobe
  • Amazon
  • Facebook
  • Microsoft
  • Hacker Earth
  • CSE Interview

Top Rated Questions

SAP Off Campus Hiring_ March 2015 Computer Skills

K’th Largest Element in BST when modification to BST is not allowed

Find the smallest window in a string containing all characters of another string

write a c program that given a set a of n numbers and another number x determines whether or not there exist two elements in s whose sum is exactly x

Generate largest number arranging a no. of given non negative integer numbers

Check a String is SUBSEQUENCE of another String Find Minimum length for that ( DNA Matching )

Adobe Interview Questions 8 month Exp

Number of Islands BFS/DFS

Level order traversal in Spiral form

Circular Linked List

N Petrol bunks or City arranged in circle. You have Fuel and distance between petrol bunks. Is it possible to find starting point so that we can travel all Petrol Bunks

SAP Off Campus Hiring_ March 2015 Analytical Aptitude

Check if an array has duplicate numbers in O(n) time and O(1) space

Linked List V/S Binary Search Tree

Python Dictionaries

Reverse a Linked List in groups of given size

Diagonal Traversal of Binary Tree

Binary Tree in Java

Word Break Problem

C++ OOPs Part1

Given a sorted array and a number x, find the pair in array whose sum is closest to x

Given array of 0’s and 1’s. All 0’s are coming first followed by 1’s. find the position of first 1

Trapping Rain Water

1014 Practice Question of New GRE – Princeton

Count Possible Decodings of a given Digit Sequence

Find min element in Sorted Rotated Array (Without Duplicates)

Coin Collection Dynamic Programming

Implement LRU Cache

Possible sizes of bus to carry n groups of friends

Reversal of LinkedList

Copyright © 2026 · Genesis Framework · WordPress · Log in