Leetcode Problem 2220. Minimum Bit Flips to Convert Number

2220. Minimum Bit Flips to Convert Number

Leetcode Solutions

Counting Set Bits in XOR of Two Numbers

  1. Compute the XOR of start and goal to get a number that has set bits where start and goal differ.
  2. Initialize a counter to keep track of the number of differing bits.
  3. Use a loop to count the set bits in the XOR result. In each iteration: a. Use the expression n & (n - 1) to clear the least significant set bit of n. b. Increment the counter.
  4. Continue the loop until n becomes 0.
  5. Return the counter as the result, which represents the minimum number of bit flips required.
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Bitwise Comparison and Counting

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