Setting the setActiveSelection where there is zero - google-apps-script

Question

I have a tremendous volume of sparse matrix data, where i want to programmatically set as active cell wherever there is (0) when I run the below snippet (function).
Which would ease me for manipulation of code labels
The data is purely random. The process has to begin from the current active cell and it has to loop again from beginning if end of the data is found.
I get unexpected results,
function getzero() {
var sheet = SpreadsheetApp.getActiveSheet();
var range = sheet.getDataRange();
var Values = range.getValues();
for (var i = 0; i < Values.length; i++) {
for (var j = 0; j < Values[i].length; j++) {
if (Values[i][j] == 0) {
sheet.setActiveSelection(sheet.getRange(i + 1, j + 1));
break;
}
}
}
}

Answer 1

This should take care of finding all the zeros. Also added a menu for you to run the command from the sheets directly. Just paste code in the script editor and reload the sheet.
// This function addes a menu Zero and submenu getzero to access your function directly from spreadsheet
function onOpen(){
var ss = SpreadsheetApp.getActive()
var menu = [{name:"Find Zero",functionName: "getzero"}]
ss.addMenu("Zeroes", menu)
}
function getzero() {
var sheet = SpreadsheetApp.getActiveSheet();
var range = sheet.getDataRange();
var Values = range.getValues();
var selectedRange = sheet.getActiveRange()
// find active cells row and column
var startRow = selectedRange.getRow() -1
var startCol = selectedRange.getColumn()
var notFoundZero = true
//Use the active cells row and column to start the loop
for (var i = startRow; i < Values.length; i++) {
if (i == startRow){
var j = startCol
}
else {
j =0
}
for (j ; j < Values[i].length; j++) {
// Using "===" makes sure the type is also match else blank is considered as zero too.
if (Values[i][j] === 0) {
Logger.log("Values Row X Col:" + i + " X " + j)
//The below line works as well as sheet.setActiveSelection
sheet.getRange(i + 1, j + 1).activate()
//Below code escapes the outer loop
i = Values.length;
// this boolean is used to runs or stops the next loop
notFoundZero = false;
// breaks inner loop
break;
}
}
}
if(notFoundZero){
for (var i = 0; i <= startRow; i++) {
if (i == startRow){
var runTill = startCol
}
else {
runTill = Values[i].length
}
for (var j=0 ; j < runTill; j++) {
if (Values[i][j] === 0) {
sheet.getRange(i + 1, j + 1).activate()
// same as above
i = Values.length;
//Used to alert if no more zeros found
notFoundZero = false;
break;
}
}
}
}
if(notFoundZero)
{
var ui = SpreadsheetApp.getUi()
ui.alert("No More zero Found")
}
}
This will check cell values after selection if no zeroes are found it will check above the selection. But after that it will stop at the selection and alert no zeroes found, this prevents a runaway loop.
Give it a go and let me know how it goes.
Edit: Below Code for searching in reverse
Below Code Has not been Tested, Might have errors. This was not the primary Question, hence did not check for errors.
function getzeroRev() {
var sheet = SpreadsheetApp.getActiveSheet();
var range = sheet.getDataRange();
var Values = range.getValues();
var selectedRange = sheet.getActiveRange()
// find active cells row and column
var startRow = selectedRange.getRow() -1
var startCol = selectedRange.getColumn()
var notFoundZero = true
//Use the active cells row and column to start the loop
for (var i = startRow; i >=0; i--) {
if (i == startRow){
var j = startCol
}
else {
j =values[i].length
}
for (j ; j >=0; j--) {
// Using "===" makes sure the type is also match else blank is considered as zero too.
if (Values[i][j] === 0) {
Logger.log("Values Row X Col:" + i + " X " + j)
//The below line works as well as sheet.setActiveSelection
sheet.getRange(i + 1, j + 1).activate()
//Below code escapes the outer loop
i = Values.length;
// this boolean is used to runs or stops the next loop
notFoundZero = false;
// breaks inner loop
break;
}
}
}
if(notFoundZero){
for (var i = values.length; i >= startRow; i--) {
if (i == startRow){
var runTill = startCol
}
else {
runTill = 0
}
for (var j=0 ; j >= runTill; j--) {
if (Values[i][j] === 0) {
sheet.getRange(i + 1, j + 1).activate()
// same as above
i = Values.length;
//Used to alert if no more zeros found
notFoundZero = false;
break;
}
}
}
}
if(notFoundZero)
{
var ui = SpreadsheetApp.getUi()
ui.alert("No More zero Found")
}
}