ZigZag

Zig Zag Methodology

by Murali Kaliappan

HTML

<div>

</div>

JavaScript

var data1 = [4,6,4,6,4,5,4,3,7,2,8,1];

checkZigZag(data1);


function checkZigZag(data) {
	
  
	var isAbove = false;  
	var isBelow = false;    
  var startIndex 	= 0;
  var endIndex 		= 0;
  var mean	=	5;
	for(var i=0;i<data.length;i++) {  	  	
  	var currentEle = data[i];
    var isEnd  	= data.length -1 == i ? true : false;
    
    if(currentEle > mean  && !isAbove) {
    	isAbove = true;
      isBelow = false;
      endIndex =i;
      if(isEnd && (endIndex - startIndex)+1 >= 5) {
        console.log("startIndex : "+startIndex+" endIndex : "+endIndex);
      }
    } else if(currentEle < mean && !isBelow) {
    	isAbove = false;
      isBelow = true;
      endIndex =i;
      if(isEnd && (endIndex - startIndex)+1 >= 5) {
        console.log("startIndex : "+startIndex+" endIndex : "+endIndex);
      }
    } else {   	
    
    	if((endIndex - startIndex)+1 >= 5) {      
    	  console.log("startIndex : "+startIndex+" endIndex : "+endIndex);
      }
      
      
    	startIndex = i;
      endIndex = i;
    	isAbove = false;
      isBelow = false;
    }            
    
  }
  
  
}