Tiger's leetcode solution

Q: Given an array of integers where 1 ≤ a[i] ≤  n  ( n  = size of array), some elements appear twice and others appear once. Find all th...

Q: Given a string  s  and a string  t , check if  s  is subsequence of  t . You may assume that there is only lower case English lette...

Q: Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses. Now...

Q: The  Hamming distance  between two integers is the number of positions at which the corresponding bits are different. Now your job i...

You are given two integer arrays  nums1  and  nums2  sorted in ascending order and an integer  k . Define a pair  (u,v)  which consists o...

Q: Given a positive integer  num , write a function which returns True if  num  is a perfect square else False. Note:   Do not  use any...

Q: You are given an integer array  nums  and you have to return a new  counts  array. The  counts  array has the property where  counts[i]...