The school administration wants to evaluate the performance of its students by merging their scores in different subjects and providing an overall grade. The scores are initially provided in the form of an array where each element represents a segment of scores. The segments are marked with a specific ID. The task is to create a new merged array with overall scores for each segment, and sort them.
Explanation: Step 1: Initialize an empty dictionary to store segment scores. Step 2: Iterate through the input array. For each segment, check if it exists in the dictionary. If it does, add the score to the existing value. If it doesn't, add the segment to the dictionary with its score. Step 3: Convert the dictionary to a list of lists and sort it.
Explanation: Step 1: Initialize an empty dictionary to store segment scores. Step 2: Iterate through the input array. For each segment, check if it exists in the dictionary. If it does, add the score to the existing value. If it doesn't, add the segment to the dictionary with its score. Step 3: Convert the dictionary to a list of lists and sort it.
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