subarray.js

function countSubarrays(arr) {
  var result = [];
  
  for (var index = 0; index < arr.length; index++) {
    var count = 1; // always include the index itself
    
    // look forward
    var subIndex = index + 1;
    while(arr[subIndex] < arr[index] && subIndex < arr.length) {
      count++;
      subIndex++;
    }
    
    // look backward
    var subIndex = index - 1;
    while(arr[subIndex] < arr[index] && subIndex >= 0) {
      count++;
      subIndex--;
    }    
        
    result[index] = count;
  }
  
  return result;
  
}