If I understand correctly, you want to count how many 0 values you have in each column? If so, you can use apply function for each of the columns: data <- data.frame( a = c(1,2,0,3), b = c(0,0,0,2) ) apply( data , 2 , function(x) sum ( x == 0 ) ) a b 1 … Read more
You might want to check your while condition! Since the conditions are in the negation, you would use AND ( && ) instead of OR (||) to combine them. EDIT: And as pointed out, you ought to be comparing Die1 and Die2 to numbers. If you’d like to keep the characters as is, you could … Read more
If the first condition is false then it wont consider the second condition. If first condition is true then it will also evaluate the second condition. This is because you are using && operation. If you use || then if the first one is false it will evaluate the next condition. 4 solved Why is … Read more
There is no error but nothing is printed, but if I print inside the while loop then it is printed multiple times. How do I fix this? [closed] solved There is no error but nothing is printed, but if I print inside the while loop then it is printed multiple times. How do I fix … Read more
print value (prints 1) ++ (adds 1 to $value) check if value is > or = to 10 and break if it is that is why you loop never gets to printing 10 since it breaks when the value is equal to 10 solved it may seem like a silly question but it’s confusing to … Read more
Everytime you have a flip (not matter if it’s previously a “top” or “bottom”), then you are resetting the other one. This is wrong. You will only need to reset it if the previous flip is different than the current flip and the total number of flips is less than 3. The condition in your … Read more
You just need to fix the indentation r = 0 while r<15: hit = str(input(“””A1 A2 A3 A4 A5\n\nB1 B2 B3 B4 B5\n\nC1 C2 C3 C4 C5\n\nD1 D2 D3 D4 D5\n\nE1 E2 E3 E4 E5\nThis is the board. Pick any co- ordinate you want to fire on: “””)) if hit in (“A2”, “a2”): print(“You hit … Read more
The while loop stops when the function exits, and the function exits when the return statement is executed. The return statement is executed when s.find() returns -1, which means that t was no found in s when searching from last_pos + 1 onwards. solved How does the while loop know when to stop?
I would: char loop=’y’; while(loop == ‘y’) { //Do your stuff here printf(“do you want to loop? (y/n) “); scanf(” %c”, &loop); if(loop != ‘y’) loop=’n’; } /A 1 solved In C Programming, How do I use a loop to ask user if they want to continue?
I would assume you’d want to compute the cube of a number by using a loop that iterates 3 times. int n, cube, i; printf(“Enter an integer: “); scanf(“%d”,&n); cube = 1; i = 0; while (i < 3) { cube = cube * n; i++; } printf(“%d\n”, cube); 2 solved Our professor asked us … Read more
If just want to handle “quit” or a float, that’s easy: total = 0.0 while True: value = raw_input(“enter a number or quit to finish”)) if value == “quit”: break total += float(value) print total But if the user types, say, qiut or 2..137, the program will bail out with a ValueError. How do you … Read more
li $t0, 0x10010000 li $t1, student id li $s3, 1 li $s5, 1 add $s0, $t0, $zero add $s1, $t1, $zero loop1 : sw $s1, 0($s0) srl $s2, $s1, 1 slt $s4, $s2, $s3 beq $s4, $s3, L2 addi $s0, $s0, 4 add $s1, $s2, $zero add $s5,$s5,$s3 j loop1 L2 : addi $s0, $s0, … Read more
You really should learn to use the console in your browser. I just played it for a little bit with the console open, and got an error: Uncaught ReferenceError: reppS is not defined In your computePwr function, you have a variable named repS, but one time you typed it as reppS. repS = reppS + … Read more
First of all, make n and p integers. Secondly n starts at 3 doesn’t it? Third the Pi series is 4.0 (- fraction + fraction)… Finally you can printf using %.*lf to increase/limit the precision of the output. if ( 2 == route ) { printf(“piseries calculator\n”); double pi=4.0; int n,p; printf(“define precision”); scanf(“%d”,&p); for(n=3;n<p;n+=2) … Read more
Let’s step it through: f(12, 18) -> a = 12, b = 18 int a1 = a, b1 = b; -> a1 = 12, b1 = 18 while (a1 != b1) -> not equal -> do the loop if (a1 < b1) a1 += a; -> a1 = 24 while (a1 != b1) -> not … Read more