Directions_Reduction.ts

Directions_Reduction.ts

export function dirReduc(arr: string[]): string[] {
  let result = [];
  let mtrx: any = {
    "NORTH": "SOUTH",
    "SOUTH": "NORTH",
    "WEST": "EAST",
    "EAST": "WEST"
  }
  for (let val of arr) {
    if(result.length > 0 && result[result.length - 1] === mtrx[val]) {
       result.pop();
    } else {
      result.push(val);
    }
  }

  
  return result;
}