Find Lucky Integer in an Array Problem

Find Lucky Integer in an Array Problem — ExecCode Easy DSA Practice

Solve the Find Lucky Integer in an Array problem on ExecCode. Free online easy DSA practice in Arrays - Logic Building. Write and run code in Java, C++, Python — no signup required to run.

Description Given an array of integers arr, a lucky integer is an integer that has a frequency in the array equal to its value. Return the largest lucky integer in the array. If there is no lucky integer return -1. Examples Example 1 Input: arr = [2,2,3,4] Output: 2 Explanation:…

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