| Title | Topics | Action | |||
|---|---|---|---|---|---|
| 104 | For Loop 1 to 10Use a `for` loop to print the numbers 1 to 10 on one line, separated by single s... | easy | ○ Not Started | Loops | Solve |
| 105 | While Loop 10 to 1Use a `while` loop to print 10 down to 1 on one line, separated by single spaces... | easy | ○ Not Started | Loops | Solve |
| 106 | Do-While 1 to 5Use a `do-while` loop to print 1 to 5 on one line, separated by single spaces.... | easy | ○ Not Started | Loops | Solve |
| 107 | Print Five StarsUse a `for` loop to print five `*` characters on one line.... | easy | ○ Not Started | Loops | Solve |
| 108 | Even Numbers 2 to 20Use a `for` loop to print the even numbers from 2 to 20, separated by single spa... | easy | ○ Not Started | Loops | Solve |
| 109 | Odd Numbers 1 to 19Use a `for` loop to print the odd numbers from 1 to 19, separated by single spac... | easy | ○ Not Started | Loops | Solve |
| 110 | Countdown 5 to 0Use a `for` loop to count down from 5 to 0 on one line, separated by single spac... | easy | ○ Not Started | Loops | Solve |
| 111 | Multiples of 5 up to 50Use a `for` loop to print the multiples of 5 from 5 to 50, separated by single s... | easy | ○ Not Started | Loops | Solve |
| 112 | Squares 1 to 5Use a `for` loop to print the squares of 1 to 5, separated by single spaces.... | easy | ○ Not Started | Loops | Solve |
| 113 | Sum 1 to 100Use a `for` loop to add the numbers 1 to 100 and print the total in the exact fo... | easy | ○ Not Started | Loops | Solve |
| 114 | Sum of Evens 1 to 10Use a `for` loop to add only the even numbers from 1 to 10 and print the output ... | easy | ○ Not Started | Loops | Solve |
| 115 | Factorial of 5Use a `for` loop to compute the factorial of 5 (5 x 4 x 3 x 2 x 1) and print it ... | easy | ○ Not Started | Loops | Solve |
| 116 | Multiplication Table of 4Use a `for` loop to print the multiplication table of 4 from 1 to 10, one line e... | easy | ○ Not Started | Loops | Solve |
| 117 | Print 1 to NRead an integer N, then use a `for` loop to print 1 to N on one line separated b... | easy | ○ Not Started | Loops | Solve |
| 118 | Sum 1 to NRead an integer N, then use a `for` loop to add 1 to N and print:
Sum: [total]
... | easy | ○ Not Started | Loops | Solve |
| 119 | foreach Over an ArrayAn int array `{2, 4, 6, 8}` is given. Use a `foreach` loop to print each element... | easy | ○ Not Started | Loops | Solve |
| 267 | Count to TenWrite a program that uses a for loop to print the whole numbers from 1 to 10. Ea... | easy | ○ Not Started | Loops | Solve |
| 268 | Sum From 1 to 100Use a loop to add together every whole number from 1 to 100 (that is, 1 + 2 + 3 ... | easy | ○ Not Started | Loops | Solve |
| 269 | Even Numbers to 20Print all of the even numbers from 2 up to and including 20, each on its own lin... | easy | ○ Not Started | Loops | Solve |
| 270 | Seven Times TablePrint the 7 times table, from 7 x 1 = 7 all the way down to 7 x 10 = 70, with on... | easy | ○ Not Started | Loops | Solve |
| 271 | Rocket CountdownUse a while loop to count down from 5 to 1, printing each number on its own line... | easy | ○ Not Started | Loops | Solve |
| 272 | Total the PricesAn array already holds a short list of prices: 4, 8, 15, 16, 23, and 42. Use a f... | easy | ○ Not Started | Loops | Solve |
| 273 | Keep DoublingStarting from 1, keep doubling a value (1, 2, 4, 8, and so on) and print each re... | easy | ○ Not Started | Loops | Solve |
| 417 | Sum of Odd Numbers 1 to 10Use a loop to add the odd numbers from 1 to 9 (`1 + 3 + 5 + 7 + 9`) and print th... | easy | ○ Not Started | Loops | Solve |
| 418 | Powers of Two up to 1024Print each power of two starting at 1 and doubling until you reach 1024, one val... | easy | ○ Not Started | Loops | Solve |
| 419 | Print the AlphabetLoop over the letters `a` through `z` and print them all on a single line, then ... | easy | ○ Not Started | Loops | Solve |
| 420 | Multiples of 3 up to 30Print every multiple of 3 from 3 up to and including 30, one per line (see Expec... | easy | ○ Not Started | Loops | Solve |
| 421 | Sum of Array ElementsGiven the array `{ 5, 10, 15, 20, 25 }`, use a `foreach` loop to add up every el... | easy | ○ Not Started | Loops | Solve |
| 422 | Print a String Character by CharacterLoop over the string `"Code"` and print each character on its own line (see Expe... | easy | ○ Not Started | Loops | Solve |
| 423 | Count Down by Twos from 10Count down from 10 to 0, stepping by 2 each time, printing each value on its own... | easy | ○ Not Started | Loops | Solve |
| 424 | Sum of Squares 1 to 5Add up the squares of the numbers 1 through 5 (`1 + 4 + 9 + 16 + 25`) and print ... | easy | ○ Not Started | Loops | Solve |
| 425 | Repeat a Word Three TimesUse a loop to print the word `Hello` exactly three times, once per line (see Exp... | easy | ○ Not Started | Loops | Solve |
| 426 | Product of Array ElementsGiven the array `{ 1, 2, 3, 4, 5 }`, multiply all elements together with a loop ... | easy | ○ Not Started | Loops | Solve |
| 427 | Numbers Divisible by 3 and 5Loop from 1 to 100 and print only the numbers divisible by BOTH 3 and 5, one per... | easy | ○ Not Started | Loops | Solve |
| 428 | Largest Element in an ArrayGiven the array `{ 3, 7, 2, 9, 4 }`, use a loop to find the largest value and pr... | easy | ○ Not Started | Loops | Solve |
| 429 | Skip Multiples of 3 with continueLoop from 1 to 10, but use `continue` to skip every multiple of 3. Print the rem... | easy | ○ Not Started | Loops | Solve |
| 120 | Multiplication Table of NRead an integer N and print its multiplication table from 1 to 10, one line each... | medium | ○ Not Started | Loops | Solve |
| 121 | Factorial of NRead an integer N (N >= 1) and print N! (the product of 1 to N). Use a `long` so... | medium | ○ Not Started | Loops | Solve |
| 122 | Count the DigitsRead a positive integer N and use a `while` loop to count how many digits it has... | medium | ○ Not Started | Loops | Solve |
| 123 | Power with a LoopRead a base and an exponent (each on its own line). Use a loop to compute base r... | medium | ○ Not Started | Loops | Solve |
| 124 | Right Triangle of StarsRead an integer N and use nested loops to print a right triangle with N rows, wh... | medium | ○ Not Started | Loops | Solve |
| 125 | Count Even and OddRead an integer N, then loop from 1 to N counting evens and odds. Print on two l... | medium | ○ Not Started | Loops | Solve |
| 274 | Sum of Evens to 50Add up only the even numbers between 1 and 50 and print the total. Loop through ... | medium | ○ Not Started | Loops | Solve |
| 275 | Star TrianglePrint a left-aligned triangle made of asterisks: 1 star on the first row, 2 on t... | medium | ○ Not Started | Loops | Solve |
| 276 | FizzBuzz to FifteenWrite the classic FizzBuzz for the numbers 1 to 15. For each number, print Fizz ... | medium | ○ Not Started | Loops | Solve |
| 430 | Reverse a NumberRead a positive integer from input, then use a loop to reverse its digits and pr... | medium | ○ Not Started | Loops | Solve |
| 431 | Sum of a Number's DigitsRead a positive integer from input and use a loop to add up its digits, then pri... | medium | ○ Not Started | Loops | Solve |
| 432 | Count Vowels in a StringRead a line of text from input and use a loop to count how many vowels (`a`, `e`... | medium | ○ Not Started | Loops | Solve |
| 433 | FizzBuzz 1 to 15Loop from 1 to 15. Print `FizzBuzz` if the number is divisible by both 3 and 5, ... | medium | ○ Not Started | Loops | Solve |
| 434 | Reverse a String with a LoopRead a line of text and use a loop to build and print the reversed string. For e... | medium | ○ Not Started | Loops | Solve |
| 435 | Count Occurrences of a CharacterRead two lines of input: the first is a word, the second is a single character. ... | medium | ○ Not Started | Loops | Solve |
| 436 | Rectangle of StarsRead two numbers from input: the number of rows, then the number of columns. Use... | medium | ○ Not Started | Loops | Solve |
| 437 | Inverted Triangle of StarsUse nested loops to print an inverted triangle of stars: the first row has 5 sta... | medium | ○ Not Started | Loops | Solve |
| 438 | Number TriangleUse nested loops to print a triangle where row `i` shows the numbers `1` through... | medium | ○ Not Started | Loops | Solve |
| 126 | Fibonacci First N TermsRead an integer N (N >= 1) and print the first N Fibonacci numbers on one line s... | hard | ○ Not Started | Loops | Solve |
| 127 | Primes up to NRead an integer N and print every prime number from 2 to N on one line separated... | hard | ○ Not Started | Loops | Solve |
| 128 | Multiplication GridRead an integer N and print an N x N multiplication grid. The value in row r, co... | hard | ○ Not Started | Loops | Solve |
| 439 | Greatest Common Divisor with a LoopRead two positive integers (one per line) and use a loop (the Euclidean algorith... | hard | ○ Not Started | Loops | Solve |
| 440 | Collatz Step CountRead a positive integer `n`. Repeatedly apply the Collatz rule (if `n` is even, ... | hard | ○ Not Started | Loops | Solve |
| 441 | Palindrome Number CheckRead a positive integer. Use a loop to reverse its digits, then print `Yes` if t... | hard | ○ Not Started | Loops | Solve |