JAVA Program Count 1’s in a sorted binary array – Searching and Sorting – A simple solution is to linearly traverse the array. The time complexity of the simple solution is O(n). We can use Binary Search to find count in O(Logn) time.
c# array sort
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C Programming-Count Inversions in an array-Divide and Conquer-Inversion Count for an array indicates – how far (or close) the array is from being sorted.