Problem Statement In this problem we are given a column title as appear in an Excel sheet, we have to return the column number that corresponds to that column title in Excel as shown below. Example #1 “AB” 28 #2 “ZY” 701 Approach To find column number for a particular …
The problem Increasing Decreasing String Leetcode Solution states that we are given a string as input. We need to modify the input. Or as the question states, we need to sort it. The term sort here does not necessarily mean simply sorting the characters. We will sort the string in …
The problem Number of Steps to Reduce a Number to Zero Leetcode Solution states that given an integer. Find the minimum number of steps to convert the given integer to 0. You can perform either of the two steps, either subtract 1 or divide the integer by 2. The problem …
The problem Remove Palindromic Subsequences Leetcode Solution states that you are given a string. The string consists of only two characters ‘a’ or ‘b’. You are required to erase the whole string. There is a restriction that you can delete only a palindromic subsequence in one move. Find the minimum …
The problem Convert Integer to the Sum of Two No-Zero Integers Leetcode Solution asked us to partition the given integer. We should partition the given integer into two numbers. There is a constraint imposed on these two integers. These two integers should not contain the digit 0. For a better …
The problem Rank Transform of an Array Leetcode Solution provided us with an array of integers. The array or the given sequence is unsorted. We need to assign ranks to each integer in the given sequence. There are some restriction s for assigning the ranks. The ranks must start with …
The problem Decompress Run-Length Encoded List Leetcode Solution states that you are given an array or vector containing a sequence. The sequence has some specific representation. The input sequence is formed from another sequence. We will call that another sequence as the original sequence. As per which the input sequence …
Problem Statement In this problem, we are given a valid parentheses string (vps) having some numbers, some operators(e.g. +,-,*) and some parentheses(e.g. ‘(‘,’)’). Valid parentheses strings (vps) are: “” “d” where d is any number “(A)” if A is valid parentheses string “A*B” if * is any operator and A …
Problem Statement In this problem, we have to design a parking lot. We have 3 kinds of parking spaces (big, medium and small). All these parking spaces has some fixed number of empty slots initially. Like, in big type of space, we can place at most b cars. In small …
Problem Statement In this problem, we are given a number made up of digits 6 or 9. We can replace one of a digit of this number and change this to another digit. i.e. we can replace a 6 to 9 or we can replace a 9 to 6. We …