1.0JassWebhttps://jassweb.com/solvedKirathttps://jassweb.com/solved/author/jaspritsinghghumangmail-com/rich600338<blockquote class="wp-embedded-content" data-secret="Fj8V842imM"><a href="https://jassweb.com/solved/solved-what-causes-indexoutofrangeexception-here-closed/">[Solved] What causes IndexOutOfRangeException here? [closed]</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://jassweb.com/solved/solved-what-causes-indexoutofrangeexception-here-closed/embed/#?secret=Fj8V842imM" width="600" height="338" title="“[Solved] What causes IndexOutOfRangeException here? [closed]” — JassWeb" data-secret="Fj8V842imM" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://jassweb.com/solved/wp-includes/js/wp-embed.min.js </script> [ad_1] The issue here is that you modifying the length of the list while iterating. After you deleted at least one item from changedNums list, its length is less than the initial 6 (so you get IndexOutOfRangeException). Also, once you deleted k-th item, you should decrement k. I modified your sample code to work as ... Read more