用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 Fb1<Ic#
插入排序: 1,=:an
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package org.rut.util.algorithm.support; 8F>9CO:&N
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import org.rut.util.algorithm.SortUtil; @}6<,;|DQ
/** H,TApF89A
* @author treeroot "=DQ { (L
* @since 2006-2-2 WwsNAJ
* @version 1.0 3\RD%[}
*/ ;O)*!yA(GG
public class InsertSort implements SortUtil.Sort{ e^N~)Nlj
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/* (non-Javadoc) v CsE|eMP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JfkEJk<
*/ ~9o@1TO:v
public void sort(int[] data) { _5S0A0
int temp; i45.2,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \\ItN
} *
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冒泡排序: qery|0W
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package org.rut.util.algorithm.support; pmBN?<
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import org.rut.util.algorithm.SortUtil; k'%yvlv
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/** .$peq
* @author treeroot awR !=\
* @since 2006-2-2 u\ 7Y_`8
* @version 1.0 neu<zSS
*/ Q^va+O
public class BubbleSort implements SortUtil.Sort{ iC
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/* (non-Javadoc) L
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9j^rFG!n
*/ CC^]Y.9
public void sort(int[] data) { <EqS
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int temp; Dn<3#V
for(int i=0;i for(int j=data.length-1;j>i;j--){ )6%*=-
if(data[j] SortUtil.swap(data,j,j-1); e=h-}XRC
} !D1#3?L
} LodP,\T
} e%pohHI
} HdlOGa6C
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} KsIHJr7-
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选择排序: <=_!8A
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package org.rut.util.algorithm.support; 8aHE=x/TL
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import org.rut.util.algorithm.SortUtil; Kn$t_7AF^
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/** yz0#0YG7
* @author treeroot 1E!.E=Y?M
* @since 2006-2-2 .s"Og;g
* @version 1.0 v$@1q9 5J
*/ HABUf^~-
public class SelectionSort implements SortUtil.Sort { LsI@_,XW<
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/* c/.s`hz
* (non-Javadoc) =#4>c8MM
* =/j!S|P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Bgqf,N |
*/ 0J[B3JO@M
public void sort(int[] data) { oMYFfnoAa
int temp;
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for (int i = 0; i < data.length; i++) { 3%r/w7Fc
int lowIndex = i; PUD8
for (int j = data.length - 1; j > i; j--) { ~pH!.|k-&
if (data[j] < data[lowIndex]) { !/H `
lowIndex = j; =?4[:#Rh
} ]O:u9If
} U.Vn|s(`z
SortUtil.swap(data,i,lowIndex); xX<T5Ls
} |1H9,:*%
} AXxyB"7A}
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} &b,A-1`w_
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Shell排序: \s)$[pAF
r2tE!gMC
package org.rut.util.algorithm.support; Qt\:A!'jw
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import org.rut.util.algorithm.SortUtil; 9G6ZKqum
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/** vq9O|E3
* @author treeroot IDpLf*vSG
* @since 2006-2-2 `K@N\VM
* @version 1.0 lxZ9y
*/ {4SaSv^/
public class ShellSort implements SortUtil.Sort{ wAu]U6!
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/* (non-Javadoc) *!%n`BR '
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T1RY1hb|g>
*/ 9MJ:]F5+
public void sort(int[] data) { .K-d
for(int i=data.length/2;i>2;i/=2){ 9
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for(int j=0;j insertSort(data,j,i); HLthVc w
} x]hG2on!
} 0n4( Rj|}2
insertSort(data,0,1); 5cM%PYU4:v
} R)N^j'R~=
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/** Zw4%L?
* @param data pHoxw|'Y
* @param j FeZW S>N
* @param i )#4(4
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*/ v5 p`=Z@%
private void insertSort(int[] data, int start, int inc) { (p'/a.bn
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~#so4<A`3
} #~m^RoE
} Exv!!0Cd^
} ~ [/jk !G
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} AK'3N1l`
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快速排序: 3qu?qD
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package org.rut.util.algorithm.support; }9B},
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import org.rut.util.algorithm.SortUtil; ettBque
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/** XgUSJ*
* @author treeroot ub1~+T'O
* @since 2006-2-2 MUtM^uY
* @version 1.0 <WmjjD
*/ .MDSP/s
public class QuickSort implements SortUtil.Sort{ ['>r tV
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/* (non-Javadoc) pwSkw J]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {#@[ttw$U
*/ ~z41$~/
public void sort(int[] data) { &{wRB l #
quickSort(data,0,data.length-1); mo4F\$2N
} Y>E` 7n
private void quickSort(int[] data,int i,int j){ zcOm"-E-
int pivotIndex=(i+j)/2; ^I6Vz?0Jl
file://swap *GhV1# <
SortUtil.swap(data,pivotIndex,j); wr:-n
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int k=partition(data,i-1,j,data[j]); 8In~qf
SortUtil.swap(data,k,j); Kn?h
if((k-i)>1) quickSort(data,i,k-1); N`X|z
if((j-k)>1) quickSort(data,k+1,j); |_s,]:
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} EN}4-P/5
/** KL(sVj^e
* @param data >x~Qa@s;
* @param i 0&kmP '
* @param j -m=!SQ >9
* @return aAd1[?&
*/ DtS7)/<T
private int partition(int[] data, int l, int r,int pivot) { I+^iOa
do{ 3T 0'zJ2f
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /UR;,ts
SortUtil.swap(data,l,r); >*^SQ{9
} Z;R/!Py.
while(l SortUtil.swap(data,l,r); S;#7B?j
return l; !-SI &qy
} ?caHS2%?ae
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} UpQda`rb
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改进后的快速排序: Ya<V@qd
,k@iNid
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; D^t:R?+
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/** YiL^KK
* @author treeroot Kj?hcGl[
* @since 2006-2-2 D~Q-:G$x
* @version 1.0 ycIcM~<4
*/ 1Z(9<M1!M
public class ImprovedQuickSort implements SortUtil.Sort { w:1UwgcPC
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private static int MAX_STACK_SIZE=4096; \x\(36\u
private static int THRESHOLD=10; ]}&HvrOld
/* (non-Javadoc) .M[t5I'\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xA*6Z)Y
*/ cnY}^_
public void sort(int[] data) { CqX*.j{
int[] stack=new int[MAX_STACK_SIZE]; m("KLp8
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int top=-1; Cnu])R
int pivot;
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int pivotIndex,l,r; `oO*ORq&
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stack[++top]=0; XVKRT7U
stack[++top]=data.length-1; ;D(6Gy9~
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while(top>0){ 9A`^ (
int j=stack[top--]; v[DxWs8q
int i=stack[top--]; xj]^<oi<
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pivotIndex=(i+j)/2; :8v? 6Q
pivot=data[pivotIndex]; 4 4WyfpTJ*
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SortUtil.swap(data,pivotIndex,j); 1:|o7`
8|!"CQJ|H
file://partition (Dba!zSs
l=i-1; *u[@C
r=j; KfC{/J\
do{ mZnsr@KF
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eG dFupfz
SortUtil.swap(data,l,r); ).tTDZ
} h>z5m
while(l SortUtil.swap(data,l,r); tC/+
SortUtil.swap(data,l,j); >@-BZJg/k
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if((l-i)>THRESHOLD){ 8&1xb@Nc7
stack[++top]=i; }_+) :<Db
stack[++top]=l-1; ij}{H#0S-
} <)L[V
if((j-l)>THRESHOLD){ 'RQEktm
stack[++top]=l+1; &EC8{.7
stack[++top]=j; 4~vn%O6n
} S[l z>I
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} -_Z
file://new InsertSort().sort(data); Uw)B(;Hy?
insertSort(data); T#Z#YM k
} O_DT7;g
/** #! (2@N8
* @param data I;{Ua*
*/ UnZc9 6
private void insertSort(int[] data) { 0yb9R/3.
int temp; YEB7X>p#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VAdUd {
} g/i.b&
} ')WS :\J
} GN+,9
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} sr<\fW
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归并排序: ZV-Yq !|t
,L\KS^>
package org.rut.util.algorithm.support; 9S5C{~P4
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import org.rut.util.algorithm.SortUtil; JFkx=![
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/** R@IwmJxX
* @author treeroot c48I-{?
* @since 2006-2-2 @k-GyV-v
* @version 1.0 ,K.Wni#m
*/ |A=~aQot
public class MergeSort implements SortUtil.Sort{ :vFYqoCn
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/* (non-Javadoc) Ozsvsa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AG Gxx?I
*/ MJn=
public void sort(int[] data) { NMN&mJsmh
int[] temp=new int[data.length]; 2Fbg"de3-
mergeSort(data,temp,0,data.length-1); \rH0=~F-P
} 0p*Oxsy
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private void mergeSort(int[] data,int[] temp,int l,int r){ :{-/b
int mid=(l+r)/2; FlbM(ofY
if(l==r) return ; r;"Qu
mergeSort(data,temp,l,mid); GCxmqoQ
mergeSort(data,temp,mid+1,r); }AS3]Lub@
for(int i=l;i<=r;i++){ Bv7os3xb
temp=data; bhW&,"$Z
} <^e
int i1=l; +rDKx(Rk
int i2=mid+1; [E qZj/
for(int cur=l;cur<=r;cur++){ H00iy$R
if(i1==mid+1) - G=doP0
data[cur]=temp[i2++]; 7Ewq'Vu`y
else if(i2>r) `mS0]/AV/
data[cur]=temp[i1++]; 7aHP;X~0
else if(temp[i1] data[cur]=temp[i1++]; )s
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else ztC,[
data[cur]=temp[i2++]; 1E$^ul-v
} 8`|Z9umW*
} /!hxW}>^
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} f!B\X*|
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改进后的归并排序: ;a(7%
AaM~B`B
package org.rut.util.algorithm.support; >PUT(yNL
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import org.rut.util.algorithm.SortUtil; b C"rQJg
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/** v;s^j
* @author treeroot C]krJse@
* @since 2006-2-2 sQO>1bh
* @version 1.0 yk2XfY
*/ W: 3fLXk+
public class ImprovedMergeSort implements SortUtil.Sort {
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private static final int THRESHOLD = 10; sGGi7%
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/* GP=bp_L
* (non-Javadoc) l0%7u
* x!fRT.,}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +"VXw2R_e
*/ rpL]5e!
public void sort(int[] data) { [4mIww%
int[] temp=new int[data.length]; Ro#O{
mergeSort(data,temp,0,data.length-1); LUA<N:
} yY80E[v
~@D{&7@
private void mergeSort(int[] data, int[] temp, int l, int r) { F^cu!-L
int i, j, k; 41i#w;ojI
int mid = (l + r) / 2; z[]8"C=
if (l == r) J/c5)IB|
return; [h0)V(1KR
if ((mid - l) >= THRESHOLD) Shu=oweJ
mergeSort(data, temp, l, mid); bG]?AiWr
else 3Io7!:+
insertSort(data, l, mid - l + 1); xp]_>WGq
if ((r - mid) > THRESHOLD) B~u`bn,iQ
mergeSort(data, temp, mid + 1, r); BHS8MV L@
else KY9@2JG
insertSort(data, mid + 1, r - mid); &hIr@Gi@ch
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for (i = l; i <= mid; i++) { gzp]hh@4
temp = data; nO8e'&|
} {fn1sGA
for (j = 1; j <= r - mid; j++) { N. 0~4H
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temp[r - j + 1] = data[j + mid]; \WM"VT
} )fbYP@9>a
int a = temp[l]; ?b?YiK&yz
int b = temp[r]; AN+S6t
for (i = l, j = r, k = l; k <= r; k++) { o_.`&Q6n
if (a < b) { vk3C&!M<a
data[k] = temp[i++]; -K0!wrKC
a = temp; F>aaUj
} else { }J_#N.y
data[k] = temp[j--]; #$u7:p
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b = temp[j]; ^dKtUH/78G
}
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} (6i.>%|_
} =la~D]T*g
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/** @E?o~jO(e
* @param data &xS]
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* @param l mz3Dt>
* @param i ;_A?Zl}
*/ et@<MU@`
private void insertSort(int[] data, int start, int len) { :Mq{ES%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Uq(fk9`6
} TL: 6Pe
} R(GL{Dh}L
} +3r4GEa
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} +w(B9rH
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堆排序: u9R@rQ9r
KH9D},
package org.rut.util.algorithm.support; =L,7~9
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import org.rut.util.algorithm.SortUtil; +.66Ky`|[
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/** qyR}|<F8*
* @author treeroot \mNN ) K@
* @since 2006-2-2 &>vfm9
* @version 1.0 Z
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*/ > |(L3UA9
public class HeapSort implements SortUtil.Sort{ 'E4}++\
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/* (non-Javadoc) N$P\$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) otdm rw|
*/ />V&
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public void sort(int[] data) { |) CfO 4
MaxHeap h=new MaxHeap(); A0H6}53, $
h.init(data); M)sAMfuUw
for(int i=0;i h.remove(); r!/<%\S
System.arraycopy(h.queue,1,data,0,data.length); "_n})s
f
} <!derr-K
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private static class MaxHeap{ \W"p<oo|H
noO#o+
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void init(int[] data){ )^j62uv
this.queue=new int[data.length+1]; >ui;B$=
for(int i=0;i queue[++size]=data; 4ms"mIt
fixUp(size); GyQvodqD
} .hK:-q,
} ,(z"s8N
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private int size=0; Uh3N#O
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private int[] queue; ,7SqRY,+
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public int get() { TECp!`)j"
return queue[1]; |eP5iy wg
} FR6PY
@J<RFgw#
public void remove() { &L r~x#Wx
SortUtil.swap(queue,1,size--); b$>1_wTL
fixDown(1); Fq'Ds[wd5
} {Hzj(c~S?
file://fixdown YGOhUT |
private void fixDown(int k) { %(:{TR
int j; o8N,mGj}
while ((j = k << 1) <= size) { x,TnYqT^
if (j < size %26amp;%26amp; queue[j] j++; pSodTG$E
if (queue[k]>queue[j]) file://不用交换 =&WH9IKz