123456789101112131415161718192021222324252627282930313233343536import java.util.Arrays;import java.util.PriorityQueue;public ...

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667...

123456789101112131415161718192021222324252627282930public class NumberofIslands { public int numIslands(char[][] grid...

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667...

1234567891011121314151617181920212223242526272829public class ValidPerfectSquare { /* Given a positive integer num...

Given two arrays of length m and n with digits 0-9representing two numbers. Create the maximum number of length k <= m + n...

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354public class LargestDivisi...

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667...

123456789101112131415161718192021public class SelfCrossing { /** * You are given an array x of n positive numbers. Yo...

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950import java.util.ArrayList;import ...