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authormzuenni <michi.zuendorf@gmail.com>2022-06-27 17:19:28 +0200
committermzuenni <michi.zuendorf@gmail.com>2022-06-27 17:19:28 +0200
commit5ab8a5088b729a9953b8dff1b2a985dc8fb2098b (patch)
treeed40d6936c0e9eee40ba62751cbf99ecddbaddc2 /datastructures/segmentTree2D.cpp
parentadabbad9c51cf7cd3874bfde8eac1fbcf84fec10 (diff)
updated tcr
Diffstat (limited to 'datastructures/segmentTree2D.cpp')
-rw-r--r--datastructures/segmentTree2D.cpp58
1 files changed, 0 insertions, 58 deletions
diff --git a/datastructures/segmentTree2D.cpp b/datastructures/segmentTree2D.cpp
deleted file mode 100644
index a9d129b..0000000
--- a/datastructures/segmentTree2D.cpp
+++ /dev/null
@@ -1,58 +0,0 @@
-// 1-indiziert. Array t: [4*n][4*m]. Nur die _x-Varianten aufrufen.
-// Laufzeit: build: O(n*m), update, sum: O(log(n)*log(m))
-void build_y(int vx, int lx, int rx, int vy, int ly, int ry) {
- if (ly == ry) {
- if (lx == rx)vt[vx][vy] = a[lx][ly];
- else t[vx][vy] = t[vx*2][vy] + t[vx*2+1][vy];
- } else {
- int my = (ly + ry) / 2;
- build_y(vx, lx, rx, vy*2, ly, my);
- build_y(vx, lx, rx, vy*2+1, my+1, ry);
- t[vx][vy] = t[vx][vy*2] + t[vx][vy*2+1];
-}}
-
-void build_x(int vx = 1, int lx = 0, int rx = N-1) {
- if (lx != rx) {
- int mx = (lx + rx) / 2;
- build_x(vx*2, lx, mx);
- build_x(vx*2+1, mx+1, rx);
- }
- build_y(vx, lx, rx, 1, 0, m-1);
-}
-
-int sum_y(int vx, int vy, int tly, int try_, int ly, int ry) {
- if (ly > ry) return 0;
- if (ly == tly && try_ == ry) return t[vx][vy];
- int tmy = (tly + try_) / 2;
- return sum_y(vx, vy*2, tly, tmy, ly, min(ry,tmy))
- + sum_y(vx, vy*2+1, tmy+1, try_, max(ly,tmy+1), ry);
-}
-
-int sum_x(int vx=1, int tlx=0, int trx=n-1,int lx,int rx,int ly,int ry) {
- if (lx > rx) return 0;
- if (lx == tlx && trx == rx) return sum_y(vx, 1, 0, m-1, ly, ry);
- int tmx = (tlx + trx) / 2;
- return sum_x(vx*2, tlx, tmx, lx, min(rx,tmx), ly, ry)
- + sum_x(vx*2+1, tmx+1, trx, max(lx,tmx+1), rx, ly, ry);
-}
-
-void update_y(int vx, int lx, int rx, int vy, int ly, int ry,
- int x, int y, int new_val) {
- if (ly == ry) {
- if (lx == rx) t[vx][vy] = new_val;
- else t[vx][vy] = t[vx*2][vy] + t[vx*2+1][vy];
- } else {
- int my = (ly + ry) / 2;
- if (y <= my) update_y(vx, lx, rx, vy*2, ly, my, x, y, new_val);
- else update_y(vx, lx, rx, vy*2+1, my+1, ry, x, y, new_val);
- t[vx][vy] = t[vx][vy*2] + t[vx][vy*2+1];
-}}
-
-void update_x(int vx=1, int lx=0, int rx=n-1, int x, int y, int new_val) {
- if (lx != rx) {
- int mx = (lx + rx) / 2;
- if (x <= mx) update_x(vx*2, lx, mx, x, y, new_val);
- else update_x(vx*2+1, mx+1, rx, x, y, new_val);
- }
- update_y(vx, lx, rx, 1, 0, m-1, x, y, new_val);
-}