Problem solving process

problemSolvingProcess.js

/*
Write a function that takes a string as input and returns the string reversed. 
Do NOT use the native .reverse() method.
reverseString("never") // returns "reven"

Strategy: 

Given a string, split the string in an array of characters
Loop backwards through the array starting from the last index
Make a new string by concatenating each character
return the new string

Steps: 

Input: "never"
Desired output: "reven"

Iteration | Array of characters | current Index | current Character | new String
1         | never               | 4             | r                 | r
2         | neve                | 3             | e                 | re
3         | nev                 | 2             | v                 | rev
4         | ne                  | 1             | e                 | reve 
5         | n                   | 0             | n                 | reven

*/

// function reverseString(string){
     // split string into an array of characters
     // declare a new string to hold the reversed characters of our original string
     // get the length of the array and assign it to a variable "len"
     // starting at the last index
        // assign the character of each index to the new string
        // subtract 1 from len variable
     // return the new string
// }
 



/* findFirstNonRepeatChar 

Given a string s, find and return the first instance of a non-repeating character in it. 
If there is no such character, return null.
findFirstNonRepeatChar("abacabad") // returns "c"

*/

// create an empty object to hold each letter as a key in our string
// loop through each letter in the string
// if the letter is not a key in the object 
// then add the letter as a key to the object with a value of 1
// else if the letter is already a key in the object then return the letter


/*
sumNestedArray

Given an array with nested arrays at each index containing a series of numbers. 
Return a flattened array with the sum of those numbers at the matching index.
sumNestedArray([[12,12],[6,6]]) // returns [24, 12]
*/

// create a new empty resultArray to hold the sum of our numbers
// for each array in our outer array
  // calculate the sum of the numbers
  // push the sum of the numbers to our resultArray
// return the resultArray

Good job, but make sure to use those transformation steps for all problems.