Rightmost Char

rightmostchar.js

'use strict'
var fs = require('fs');
fs
  .readFileSync(process.argv[2])
  .toString()
  .split('\n')
  .forEach(function(line){
    if(line != ""){
      line = line.split(',')
      var string = line[0];
      var search = line[1] || '';
      var positions = [];
      if(search != ''){
        for(var i = 0; i < string.length; i++){
          var charac = string[i]
          if(charac == search)
            positions.push(i)
          }
      }
    console.log(positions[positions.length - 1] || -1)
    }
  })