Leetcode Problem 2934. Minimum Operations to Maximize Last Elements in Arrays

2934. Minimum Operations to Maximize Last Elements in Arrays

Leetcode Solutions

Check and Swap Approach

  1. Initialize two variables, swap1 and swap2, to count the number of swaps needed for the two cases.
  2. Initialize two flags, flag1 and flag2, to indicate if the conditions can be satisfied for the two cases.
  3. For the first case (without swapping the last elements), iterate through the arrays and increment swap1 if a swap is needed and possible.
  4. If a swap is not possible, set flag1 to 0 and break out of the loop.
  5. For the second case (with swapping the last elements), perform a swap between the last elements and set swap2 to 1.
  6. Iterate through the arrays as in step 3, incrementing swap2 if needed.
  7. If a swap is not possible, set flag2 to 0 and break out of the loop.
  8. If both flags are 0, return -1.
  9. Otherwise, return the minimum of swap1 and swap2.
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Simple Greedy Approach

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