FastPrepMinimum Swaps to Group Circular Ones

Minimum Swaps to Group Circular Ones

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Problem statement

Given a circular binary array nums, return the minimum number of swaps needed to place all its 1 values in one consecutive circular block.

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Examples

Example 1

nums = [0,1,0,1,1,0,0]return = 1

There are three ones. Positions 1, 2, 3 contain [1,0,1]. Swapping the zero at position 2 with the one at position 4 groups all three ones in one swap.

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FastPrep Pro
Reported in 1 Amazon interview this week

Unlock this recently reported problem

FastPrep Pro gives you full access to interview problems reported within the last week.

  • Full problem statement and constraints
  • 1 more worked example, explained
  • Guided hints and editorial
  • Run your code on real test cases
$8.25/month

$99 billed yearly — or $19 month-to-month. Cancel anytime.

Free plan — 2 of 2 free unlocks used this week