Practice Problems

Problem of the Day: Integer Square Root — keep your streak alive!

Practice Problems — implementation

#ProblemTopicsDifficulty
1 Sum of Two Numbers math implementation 800
7 Sum of an Array implementation 800
8 Minimum of an Array implementation 800
9 Range of an Array implementation 800
21 Sum of Digits math implementation 800
24 Numeric Palindrome implementation 800
25 Largest Digit implementation 800
26 Count Even Digits implementation 800
32 Maximum of Three implementation 800
42 Leap Year math implementation 800
43 Robot on a Line implementation 800
49 Shout It implementation strings 800
50 Swap the Case implementation strings 800
323 Consecutive Differences implementation 800
375 The Staircase implementation 800
379 Times Table implementation 800
3 Maximum of an Array implementation 900
4 Reverse a String implementation strings 900
11 Count Distinct Values implementation 900
14 Count Local Maxima implementation 900
23 Reverse a Number implementation 900
40 Seconds to H:MM:SS implementation 900
44 Grid Walk implementation 900
122 Zeros to the Back implementation 900
130 Richest Row implementation 900
131 Diagonal Difference implementation 900
316 Valid Hexadecimal implementation strings 900
320 Valid Clock Time implementation strings 900
321 Prefix Maxima implementation 900
322 Suffix Minima implementation 900
348 Ordinal Numbers implementation 900
350 Readable Numbers implementation 900
356 Peak Occupancy implementation 900
362 Elevator Log implementation 900
376 Hollow Square implementation 900
381 Best of N implementation 900
421 Record Breakers implementation 900
429 The Longest Plateau implementation 900
451 The Weird Algorithm math implementation 900
466 Inverse Permutation implementation 900
487 Transpose implementation 900
495 Strictly in the Middle implementation 900
10 Second Largest Value implementation 1000
12 Above the Average math implementation 1000
15 Longest Non-Decreasing Run implementation 1000
17 Most Frequent Value implementation 1000
19 First Repeated Value implementation 1000
34 Closest to Zero implementation 1000
41 Clock Plus K Minutes implementation 1000
45 Returns to the Origin implementation 1000