DSA Warm-up 25

1 Sum of array elements Easy DSA — Arrays 2 Find maximum in array Easy DSA — Arrays 3 Reverse an array in-place Medium DSA — Arrays 4 Count occurrences of element Easy DSA — Arrays 5 Second largest element Medium DSA — Arrays 6 Two Sum — indices for target 8 #1 Easy DSA — Arrays 7 Maximum subarray sum (Kadane) #2 Medium DSA — Arrays 8 Rotate array right by 3 #3 Medium DSA — Arrays

1 Sum of array elements Easy DSA — Stacks & Queues 2 Find maximum in array Easy DSA — Stacks & Queues 3 Reverse an array in-place Medium DSA — Stacks & Queues 4 Count occurrences of element Easy DSA — Stacks & Queues 5 Second largest element Medium DSA — Stacks & Queues 6 Valid parentheses depth #1 Easy DSA — Stacks & Queues 7 Queue — simulate task scheduler #2 Medium DSA — Stacks & Queues 8 Valid parentheses depth #3 Easy DSA — Stacks & Queues 9 Queue — simulate task scheduler #4 Medium DSA — Stacks & Queues 10 Valid parentheses depth #5 Easy DSA — Stacks & Queues

1 Sum of array elements Easy DSA — Sorting 2 Find maximum in array Easy DSA — Sorting 3 Reverse an array in-place Medium DSA — Sorting 4 Count occurrences of element Easy DSA — Sorting 5 Second largest element Medium DSA — Sorting 6 Bubble sort [5, 4, 3, 2, 1] #1 Medium DSA — Sorting 7 Selection sort [6, 5, 4, 3, 2, 1] #2 Medium DSA — Sorting