Pregunta de entrevista de Microsoft

Coding problems: 1. Write a code showing how 2 goroutines would update the same variable? 2. Write a program to sum 2 numbers. the numbers will be given in an array presentatione e.g: 123 as [1,2,3]. output the sum in the same format? 3. Write a program to check is paranthesis are balanced. "(", "[", "{" 3 types of paranthesis can be provided in the inout string. 4. Write a program to reverse a linkedlist using recusrsion.