Problem 1098. USC Fall 2012 ACM : Code Word Minimum Flipped Bits
This Challenge is to solve Question A of the USC ACM Fall 2012 Contest.
Given an array M of Valid binary codewords(m codewords of width n) and a Received Corrupted(?) codeword of width n, determine the minimum number of flipped bits in the Received codeword to generate a valid codeword.
Input: [ M, v ]
Output: e, minimum number of error(flipped) bits .
From full USC data file
Input: [0 0 0; 1 1 1; 1 1 0], [0 1 0]
Output: 1 as [0 1 0] can convert to [0 0 0] or [1 1 0] with a single flip
Matlab one-liner?
The Winning C solution - not much help:
#include <iostream> #include <stdio.h> #include <string> using namespace std; int main () { freopen("codes.in", "r", stdin); int K,n,b; cin >> K; for (int i = 1; i < K + 1; ++i) { cin >> n >> b; string m[1000], r; for (int j = 0; j < n; ++j) cin >> m[j]; cin >> r; % Process Start int f = b; for (int j = 0; j < n; ++j) { int d = b; for (int k = 0; k < b; ++k) { if (m[j][k] == r[k]) --d; } f = ((f <= d) ? f : d); } % Process End printf("Data Set %d:\n", i); printf("%d\n\n", f); } return 0; }
Solution Stats
Solution Comments
Show commentsProblem Recent Solvers17
Suggested Problems
-
39752 Solvers
-
Is my wife right? Now with even more wrong husband
1316 Solvers
-
Back to basics 4 - Search Path
363 Solvers
-
Getting the absolute index from a matrix
242 Solvers
-
Volume of a sphere given its surface area
144 Solvers
More from this Author294
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!