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Mastering Development

Given 2 String array and count the number of islands(not leetcode question)

I have some trouble coding a task that is beyond my capability. The problem gives you two String array, for example: No1[A,B,B,C,B,D,F,G] No2[E,E,C,D,D,E,H,H] and the same index in those two arrays will connect and form islands,just like the following graph enter image description here and it returns two islands. I tried to solve the problem […]

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Mastering Development

Can anyone explain what this is

},removeAttr:function(a,b){var c,d,e=0,f=b&&b.match(E);if(f&&1===a.nodeType)while(c=f[e++])d=n.propFix[c]||c,n.expr.match.bool.test(c)&&(a[d]=!1),a.removeAttribute(c)},attrHooks:{type:{set:function(a,b){if(!k.radioValue&&”radio”===b&&n.nodeName(a,”input”)){var c=a.value;return a.setAttribute(“type”,b),c&&(a.value=c),b}}}}}),Zb={set:function(a,b,c){return b===!1?n.removeAttr(a,c):a.setAttribute(c,c),c}},n.each(n.expr.match.bool.source.match(/\w+/g),function(a,b){var c=$b[b]||n.find.attr;$b[b]=function(a,b,d){var e,f;return d||(f=$b[b],$b[b]=e,e=null!=c(a,b,d)?b.toLowerCase():null,$b[b]=f),e}});var _b=/^(?:input|select|textarea|button)$/i;n.fn.extend({prop:function(a,b){return J(this,n.prop,a,b,arguments.length>1)},removeProp:function(a){return this.each(function(){delete this[n.propFix[a]||a]})}}),n.extend({propFix:{“for”:”htmlFor”,”class”:”className”},prop:function(a,b,c){var d,e,f,g=a.nodeType;if(a&&3!==g&&8!==g&&2!==g)return f=1!==g||!n.isXMLDoc(a),f&&(b=n.propFix[b]||b,e=n.propHooks[b]),void 0!==c?e&&”set”in e&&void 0!==(d=e.set(a,c,b))?d:a[b]=c:e&&”get”in e&&null!==(d=e.get(a,b))?d:a[b]},propHooks:{tabIndex:{get:function(a){return a.hasAttribute(“tabindex”)||b.test(a.nodeName)||a.href?a.tabIndex:-1}}}}),k.optSelected||(n.propHooks.selected={get:function(a){var b=a.parentNode;return b&&b.parentNode&&b.parentNode.selectedIndex,null}}),n.each([“tabIndex”,”readOnly”,”maxLength”,”cellSpacing”,”cellPadding”,”rowSpan”,”colSpan”,”useMap”,”frameBorder”,”contentEditable”],function(){n.propFix[this.toLowerCase()]=this});var ac=/[\t\r\n\f]/g;n.fn.extend({addClass:function(a){var b,c,d,e,f,g,h=”string”==typeof a&&a,i=0,j=this.length;if(n.isFunction(a))return this.each(function(b){n(this).addClass(a.call(this,b,this.className))});if(h)for(b=(a||””).match(E)||[];j>i;i++)if(c=this[i],d=1===c.nodeType&&(c.className?(” “+c.className+” “).replace(ac,” “):” “)){f=0;while(e=b[f++])d.indexOf(” “+e+” “)<0&&(d+=e+” “);g=n.trim(d),c.className!==g&&(c.className=g)}return this},removeClass:function(a){var b,c,d,e,f,g,h=0===arguments.length||”string”==typeof a&&a,i=0,j=this.length;if(n.isFunction(a))return this.each(function(b){n(this).removeClass(a.call(this,b,this.className))});if(h)for(b=(a||””).match(E)||[];j>i;i++)if(c=this[i],d=1===c.nodeType&&(c.className?(” “+c.className+” “).replace(ac,” “):””)){f=0;while(e=b[f++])while(d.indexOf(” “+e+” “)>=0)d=d.replace(” “+e+” “,” “);g=a?n.trim(d):””,c.className!==g&&(c.className=g)}return this},toggleClass:function(a,b){var c=typeof a;return”boolean”==typeof b&&”string”===c?b?this.addClass(a):this.removeClass(a):this.each(n.isFunction(a)?function(c){n(this).toggleClass(a.call(this,c,this.className,b),b)}:function(){if(“string”===c){var b,d=0,e=n(this),f=a.match(E)||[];while(b=f[d++])e.hasClass(b)?e.removeClass(b):e.addClass(b)}else(c===U||”boolean”===c)&&(this.className&&L.set(this,”className“,this.className),this.className=this.className||a===!1?””:L.get(this,”className“)||””)})},hasClass:function(a){for(var b=” “+a+” “,c=0,d=this.length;d>c;c++)if(1===this[c].nodeType&&(” “+this[c].className+” “).replace(ac,” “).indexOf(b)>=0)return!0;return!1}});var […]

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Mastering Development

Best way to architecture a Pokemon class

This is gonna be a doozie to explain, but thanks for reading. Pokemon knowledge is essential for understanding. So my first idea, which is obviously the correct one, was to make a Pokemon class. I even made subclasses like “PokemonInfo” and “PokemonStats” which acted like directories for information, and made instantiating a Pokemon not all […]

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User Help

Send # as keystroke with auto hotkey

We are working on a AHK program where we need to send # as a keystroke. We already tried Send, # but doesnt work. Couldnt find the right keystroke in the list: https://www.autohotkey.com/docs/KeyList.htm Full program looks like this: ^q:: Send, ( ^f # )

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Ask Mathematics

Proving that a diagram involving associators and unitors commutes in a bicategory

In a bigategory, by coherence, the following equation holds for all $f : x \to y$ and $g : y \to z$: $$ \rho_{g * f} \; = \; \textit{id}_g * \rho_f \; \circ \; \alpha_{g, f, I_x} $$ Diagrammatically: How do you prove it starting from the usual triangle and pentagon coherence axioms? Mumbling […]

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Mastering Development

Identify missing elements from another dataset per group

I have two datasets both containing a common field but would like to retrieve all of the missing elements of one dataset compared to the other one. My df1 looks like this: Account.ID Product.ID 1 A 1 B 1 C 1 D 2 A 2 E 2 F 3 B 3 D And my other […]

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Ask Mathematics

Is $0$ an eigenvalue of matrix?

We have $A$, $B$, $C$, $D$, $E$ and $F$ which are $n \times n$ matrices ($n≥3$). If $det(ABC)=0$, $B$ is invertible, $rank(C)=n$, nullity of $D$ is 2, matrix $E$ columns span $R^n$ subspace which has dimension 1 and $det(DEF)=0$. The question is that is $0$ an eigenvalue of any of these following matrices: $A$, $B$, […]

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Mastering Development

Check if pandas column contains all elements from a list

I have a df like this: frame = pd.DataFrame({‘a’ : [‘a,b,c’, ‘a,c,f’, ‘b,d,f’,’a,z,c’]}) And a list of items: letters = [‘a’,’c’] My goal is to get all the rows from frame that contain at least the 2 elements in letters I came up with this solution: for i in letters: subframe = frame[frame[‘a’].str.contains(i)] This gives […]

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Ask Mathematics

Proving that a diagram involving associators and unitors commutes in a bicategory

In a bigategory, by coherence, the following equation holds for all $f : x \to y$ and $g : y \to z$: $$ \rho_{g * f} \; = \; \textit{id}_g * \rho_f \; \circ \; \alpha_{g, f, I_x} $$ Diagrammatically: How do you prove it starting from the usual triangle and pentagon coherence axioms? Mumbling […]

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Mastering Development

how to summarise multiple logistic regression models in a table?

I have a dataset with age as continuous and as a factor, sex as a factor and 4 groups. logistic_s <- data.frame( ID = c(1:6), Age = c(9, 12, 16, 57, 29, 24), Age1 = factor(c(1, 2, 2, 6, 3, 3)), Sex = factor(c(“F”, “M”, “F”, “M”, “F”, “F”)), N = c(rep(1, 6)), G = […]