percentage

How do I make it so .. 80% of the time it will say sendMessage("hi"); 5 % of the time it will say sendMessage("bye"); and 15% of the time it will say sendMessage("Test"); Does it have to do something with Math.random()? like if (Math.random() * 100 < 80) { sendMessage("hi"); } else if (Math.random() * 100 < 5) { sendMessage("bye"); } Ernest Friedman-Hill Yes, Math.random() is an excellent way to accomplish this. What you want to do is compute a single random number, and then make decisions based on that: var d = Math.random(); if (d < 0.5) // 50% chance of being here else if (d < 0.7) // 20%

I am working on servlet and jsp project. I am passing an object from servlet to JSP. And currently I am iterating that object and showing them in a table - Below is my code in jsp - <TABLE id="tableSMS" BORDER="1" CELLPADDING="3" CELLSPACING="1" style="text-align: center;"> <TR style="color:#ffffff;background-color:#787878;"> <TH>Hash Name</TH> <TH>Database Name</TH> <TH>Version</TH> </TR> <c:forEach var="i" begin="0" end="${reportCount.getHash().size() - 1}"> <TR> <TD> ${reportCount.getHash().get(i)} </TD> <TD> ${reportCount.getDatabaseName().get(i)} </TD> <TD> ${reportCount.getVersion().get

I have a dataframe and want to use pct_chg method to calculate the % change between only 2 of the selected columns, B and C, and put the output into a new column. the below code doesnt seem to work. can anyone help me? df2 = pd.DataFrame(np.random.randint(0,50,size=(100, 4)), columns=list('ABCD')) df2['new'] = df2.pct_change(axis=1)['B']['C'] Try: df2['new'] = df2[['B','C']].pct_change(axis=1)['C'] pct_change returns pct_change across all the columns, you can select the required column and assign to a new variable. df2['new'] = df2.pct_change(axis=1)['C'] A B C D new 0 29 4 29 5 6.250000 1 14

I have a database and I want to create a table with COUNT function in it. Is it possible ? I have 3 existing tables: Member Feedback Attendance In Feedback table, 2 columns Class_ID, Likes (Class_ID link with the attendance, as each member attend 1 class eg. class 1,2,3,etc. and Likes is for the number of people like the class). In Attendance table, 3 columns: Class_ID Member_ID Non_member_name Now I want to alter Feedback table to add 2 new columns. One to count the number of people attend the class, e.g if there is 4 people attend class 1,there would be 4 rows of Class_ID=1. Two to count the

I'm looking to create an infographic that will display percentages and I want them to increase from 0% to the final statistic (i.e. max of 100%) and then stop there. You can see this effect on sites like http://www.hispanicsatnbcu.com/part3.html or http://www.smartpowergeneration.com/ (notice the percentages next to the different types of energy in the second section). I imagine that I would need to use the JQuery .scrollTop method so that when a user reaches a certain point it can begin to increase the percentage as they scroll more but I really don't know how you would dynamically increase

This question already has an answer here: Sum of two numbers with prompt 8 answers I tried to do a REALLY simple thing using JavaScript, a percentage calculator. This is the code: var num = prompt("What is the number?") var perc = prompt("What is the percentage of change?") var math = num / (perc + 100) * 100 var result = alert(eval(math)) But, for some reason, I can sum, for example: var num1 = 15 var num2 = 100 alert(num1 + num2) It will display 115, but I can't sum using something like this: var num1 = prompt("Input a number.") var num2 = 100 alert(num1 + num2) If I write 15 in num1, the