text: 
  exports.min = function min (array) {
          let a =  Math.min.apply(null, array); 
          if(a === 0 || a === Infinity){
              return 0}
              return a   
  }
  
  exports.max = function max (array) {
          let a = Math.max.apply(null, array)
          if(a === 0 || a === -Infinity){
              return 0}
              return a   
        
  }
  
  exports.avg = function avg (array) { 
      let b = Math.max.apply(null, array)
      if(b === 0|| b === -Infinity || b === Infinity){return 0}
      let reducer = (oper, sum) => oper + sum;
      let a = 1
   a = (array.reduce(reducer))/array.length;
  
             return a 
  }
  