Coding Mines

Machine Learning, Data Science, Data Structure, and Algorithmic Problems and their Solutions

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Zigzag Conversion Problem LeetCode (Print Concatenation of Zig-Zag String in 'n' Rows)

The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this ...

Valid Parenthesis LeetCode (Check if a given string is valid parenthesis combination)

Problem : Given a string s containing just the characters '(' , ')' , '{' , '}' , '[' and ...

Search Insert Position LeetCode (Search insert position of K in sorted array)

Given a sorted array of distinct integers and a target value, return the index if the target is found. If not, return the index where it wo...

Find First and Last Position of Element in Sorted Array LeetCode (Search for a Range )

Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value. If targ...

Roman To Integer LeetCode (Roman Numerals to Decimal)

Given a roman numeral , convert it to an integer. Roman numerals are represented by seven different symbols: I , V , X , L , C , D ...

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