Consider the following LeetCode problem.
Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), ?>some elements appear twice and other...
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how to find duplicate in this type of arrays, please help
arr=[
“Pakistan”,
“pakistan”,
“paKISTAN”,
“USA”,
“INDIA”,
“LONDON”,
“PATOKI”,
“Patoki”,
“Brazil”,
“CaNada”,
“canada”,
]