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authorjack <[email protected]>2024-06-14 13:13:15 -0600
committerjack <[email protected]>2024-06-14 13:13:15 -0600
commitd343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa (patch)
tree96df922dae2a5073d9a50ea70c7aae6aa37e3ebe /image_overlap.rs
downloadleetcode-d343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa.tar.gz
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Diffstat (limited to 'image_overlap.rs')
-rw-r--r--image_overlap.rs35
1 files changed, 35 insertions, 0 deletions
diff --git a/image_overlap.rs b/image_overlap.rs
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+++ b/image_overlap.rs
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+impl Solution {
+ pub fn largest_overlap(img1: Vec<Vec<i32>>, img2: Vec<Vec<i32>>) -> i32 {
+ let mut ans = 0;
+ for i in 0..img1[0].len() {
+ for j in 00..img1.len() {
+ ans = ans.max(Solution::shift_and_compare(&img1, &img2, j, i));
+ }
+ }
+ ans
+ }
+
+ fn shift_and_compare(img1: &[Vec<i32>],img2: &[Vec<i32>], x_shift: usize, y_shift: usize) -> i32 {
+ let (mut counter, cols, rows) = ((0,0), img1.len(), img1[0].len());
+ for i in 0..cols {
+ for j in 0..rows {
+ if img1[i][j] == 1 {
+ let ii = i + y_shift;
+ let jj = j + x_shift;
+ if ii < rows && jj < cols && img2[ii][jj] == 1 {
+ counter.0 += 1;
+ }
+ }
+ if img2[i][j] == 1 {
+ let ii = i + y_shift;
+ let jj = j + x_shift;
+ if ii < rows && jj < cols && img2[ii][jj] == 1 {
+ counter.1 += 1;
+ }
+ }
+ }
+ }
+ counter.0.max(counter.1)
+ }
+}
+