Integers & Divisibility Questions

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Even Or Odd

Easy
3 views 25 Jan 2026
Given an integer n, print EVEN or ODD....
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Absolute Value

Easy
3 views 25 Jan 2026
Given an integer n, print its absolute value....
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Sign Of Number

Easy
2 views 25 Jan 2026
Print NEGATIVE, ZERO, or POSITIVE for an integer n....
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Last Digit

Easy
3 views 25 Jan 2026
Print the last digit of an integer n (as a non-negative digit)....
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Divisible By 3

Easy
4 views 25 Jan 2026
Check if a number is divisible by 3 and print YES/NO....
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Divisible By 9

Easy
3 views 25 Jan 2026
Check if a number is divisible by 9 and print YES/NO....
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Divisible By 11

Medium
3 views 25 Jan 2026
Check divisibility by 11 using digit positions rule....
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Divisible By 4 From Last Two Digits

Medium
2 views 25 Jan 2026
Given a decimal string s, decide if it represents a number divisible by 4....
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Divisible By 8 From Last Three Digits

Medium
5 views 25 Jan 2026
Given a decimal string s, decide if it represents a number divisible by 8....
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Divisible By 25

Easy
3 views 25 Jan 2026
Given integer n, print YES if divisible by 25....
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Compare Fractions a/b and c/d

Hard
4 views 25 Jan 2026
Compare two fractions without floating point. Print , or =....
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Floor And Ceil Division

Hard
5 views 25 Jan 2026
Given integers a and b>0, print floor(a/b) and ceil(a/b)....
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Remainder Always Positive

Medium
4 views 25 Jan 2026
Given integers a and m>0, print a mod m in range [0,m-1]....
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Round To Nearest Multiple

Hard
3 views 25 Jan 2026
Given n and k>0, round n to nearest multiple of k (ties go up)....
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Count Multiples In Range

Medium
4 views 25 Jan 2026
Given L R k, count integers in [L,R] divisible by k....
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Smallest Multiple >= N

Easy
5 views 25 Jan 2026
Given n and k>0, print the smallest multiple of k that is >= n....
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Largest Multiple <= N

Easy
5 views 25 Jan 2026
Given n and k>0, print the largest multiple of k that is ...
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Check Power Of Two

Medium
4 views 25 Jan 2026
Given n, print YES if it is a power of 2....
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Nearest Power Of Two

Medium
4 views 25 Jan 2026
Given n>0, print the smallest power of 2 that is >= n....
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Binary Length

Easy
4 views 25 Jan 2026
Given n>0, print how many bits are needed to write n in binary....
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Digit Sum Mod 9

Medium
6 views 25 Jan 2026
Given a big number as string, print its digit sum modulo 9....
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Digital Root

Medium
4 views 25 Jan 2026
Given a non-negative integer n (as string), print its digital root (0-9)....
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Check Divisible By 6

Easy
2 views 25 Jan 2026
Given integer n, print YES if divisible by 6....
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Check Divisible By 12

Medium
5 views 25 Jan 2026
Given integer n, print YES if divisible by 12....
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Minimum Steps To Make Divisible

Medium
6 views 25 Jan 2026
Given n and k, find the smallest non-negative x so (n+x) divisible by k....
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Reduce Ratio

Medium
4 views 25 Jan 2026
Given a and b, print the reduced ratio a:b....
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Count Divisors Naive

Medium
5 views 25 Jan 2026
Given n...
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Sum Of Divisors Naive

Hard
3 views 25 Jan 2026
Given n...
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Perfect Number Check

Hard
9 views 25 Jan 2026
Check if n is a perfect number (sum of proper divisors equals n)....
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Leap Year Simple

Easy
5 views 25 Jan 2026
Given year y, print YES if it is a leap year....
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