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Which two method you need to implement for key Object in HashMap ?5
Q: Which two method you need to implement for key Object in HashMap ?
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Answer :
Explanation :
In order to use any object as Key in HashMap, it must implements equals and hashcode method in Java.
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Since Nithya and Suganya exchange places, so Rita’s new position is the same as Monika’s earlier position. This position is 17th from the right and 10th from the left. Therefore Number of girls in the row = (16 + 1 + 9) = 26.