LeetCode Solutions

Solutions for all the leetcode questions I solved.
Runtime and memory usage is mentioned at the top of each program.

List of questions attempted:

#	Title	Difficulty
1	Two Sum	Easy
7	Reverse Integer	Medium
9	Palindrome Number	Easy
26	Remove Duplicate from Sorted Array	Easy
27	Remove Element	Easy
28	Find the Index of the First Occurrence in a String	Easy
29	Divide Two Integers	Medium
58	Length of last word	Easy
61	Rotate List	Medium
66	Plus One	Easy
69	Sqrt(x)	Easy
74	Search a 2D Matrix	Medium
83	Remove duplicates from sorted list	Easy
121	Best Time to Buy and Sell Stock	Easy
125	Valid palindrome	Easy
141	Linked List Cycle	Easy
160	Intersection of Two Linked Lists	Easy
169	Majority Element	Easy
191	Number of 1 Bits	Easy
202	Happy Number	Easy
217	Contains Duplicate	Easy
242	Valid Anagram	Easy
258	Add Digits	Easy
263	Ugly Number	Easy
268	Missing Number	Easy
344	Reverse String	Easy
367	Valid Perfect Square	Easy
412	Fizz Buzz	Easy
441	Arranging Coins	Easy
461	Hamming Distance	Easy
704	Binary Search	Easy
709	To Lower Case	Easy
747	Largest Number At Least Twice of Others	Easy
977	Squares of Sorted Array	Easy
1051	Height Checker	Easy
1108	Defanging an IP Address	Easy
1207	Unique Number of Occurrences	Easy
1221	Split a String in Balanced Strings	Easy
1431	Kids With the Greatest Number of Candies	Easy
1470	Shuffle the Array	Easy
1480	Running Sum of 1d Array	Easy
1489	XOR Operation in an Array	Easy
1512	Number of Good Pairs	Easy
1572	Matrix Diagonal Sum	Easy
1672	Richest Customer Wealth	Easy
1929	Concatenation of Array	Easy
2114	Maximum Number of Words Found in Sentences	Easy
2220	Minimum Bit Flips to Convert Number	Easy
2235	Add Two Integers	Easy
2413	Smallest Even Multiple	Easy
2938	Separate Black and White Balls	Medium