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。 JEBo!9
插入排序: S_2I8G^A
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package org.rut.util.algorithm.support; ~`_nw5y
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import org.rut.util.algorithm.SortUtil; :@b>,{*4zS
/** V|?
* @author treeroot 05pCgI}F>
* @since 2006-2-2 L1C'V/g
* @version 1.0 R?|_`@@A
*/ D|-]"(2i
public class InsertSort implements SortUtil.Sort{ ?QVD)JI*k
&|E2L1
/* (non-Javadoc) Z^GriL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FT(EH
*/ XcfTE
m
public void sort(int[] data) { ha8do^x
int temp; ]r"{G*1Q
9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B~PF <8h5
} ,$;CII
v
} 6gR=e+
} ki+9Ln;
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} Ha+FH8rZ
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冒泡排序: 06Hn:IT18
9I.v?Tap
package org.rut.util.algorithm.support; Bxa],inuZ
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import org.rut.util.algorithm.SortUtil; =v;-{oN!
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/** y6PAXvv'{
* @author treeroot [#9ij3vxd
* @since 2006-2-2 )E[5lD61
* @version 1.0 v"F0$c
*/ '}rDmt~
public class BubbleSort implements SortUtil.Sort{ J<`RlDI
|"yf@^kdC
/* (non-Javadoc) 8sIrG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) be:phS4vz
*/ %EGr0R(
public void sort(int[] data) { v1C.\fL
int temp; C|f7L>qe
for(int i=0;i for(int j=data.length-1;j>i;j--){ yb{Q, Dz
if(data[j] SortUtil.swap(data,j,j-1); $G_Q`w=jM
} ;x-H$OZX
} c,q"}nE8w
} bV`C;RPn
} h)_Gxe"x
OF&h=1De,
} [tqO}D
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选择排序: HZ
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2 H[ ; v +
package org.rut.util.algorithm.support; v~"Ef_`
u4YM^* S.
import org.rut.util.algorithm.SortUtil; .Y1bY :=
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/** c45tmul
* @author treeroot /D[dO6.
* @since 2006-2-2 xf/m!b"p
* @version 1.0 Y_&g="`Q
*/ F_iXd/
public class SelectionSort implements SortUtil.Sort { lf{e[!ML'
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/* \J. .*,'
* (non-Javadoc) 1d"Z>k:mn
* C
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K%<j=c
*/ n9w9JXp;!
public void sort(int[] data) { 6fH@wQ"wN
int temp; iX u]e;6
for (int i = 0; i < data.length; i++) { o+`6LKg;
int lowIndex = i; 00I}o%akO
for (int j = data.length - 1; j > i; j--) { 6=4wp?
if (data[j] < data[lowIndex]) { [Aj Q#;#Q
lowIndex = j; q5h*`7f
} M#"524Nz
} w\54j)rb
SortUtil.swap(data,i,lowIndex); 0N[&3Ee8
} YBYZ=,"d
} e0@6Pd
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} Tus}\0/i>
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Shell排序: M;cO0UIwO
)vmA^nU>
package org.rut.util.algorithm.support; 7^wc)E^H
NaVQ9ku7VW
import org.rut.util.algorithm.SortUtil; pi=-#g(2
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/** Q9I
j\HbA"
* @author treeroot
RZM"~ 0
* @since 2006-2-2 .Ha'p.
* @version 1.0 #-pc}Y|<
*/ gu #-O?B
public class ShellSort implements SortUtil.Sort{ ,yd
MU\so(
X;<BzA!H
/* (non-Javadoc) V.os
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6KD `oUx
*/ vN2u34
public void sort(int[] data) { 3qY K_M^[
for(int i=data.length/2;i>2;i/=2){ uOa26kE4
for(int j=0;j insertSort(data,j,i); .sQ=;w/ZA
} *),8PoT
} MCU_Z[N#10
insertSort(data,0,1); jp $Z]
} 8G5Da|\
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/** B||;'
* @param data 3Tn)Z1o
* @param j o)OUWGjb/K
* @param i 5,)Qw
*/ J9K3s_SN
private void insertSort(int[] data, int start, int inc) { E*# ]**
int temp; s7oT G!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8k(P,o
} )K'N(w
} 9;?UvOI;
} }K8/-d6
$T :un.TM
} Rq[ M29
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快速排序: z>w`ZD}XY
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package org.rut.util.algorithm.support; OgF+OS
0%)i<a!_Z
import org.rut.util.algorithm.SortUtil; VXR]"W=
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/** hDV20&hq
* @author treeroot 191&_*Xb
* @since 2006-2-2 tK
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* @version 1.0 \6;=$f/?t
*/ 1 { , F
public class QuickSort implements SortUtil.Sort{ \^#~@9
a,78l@d(
/* (non-Javadoc) M)sZSH.<O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gIA@l`"
*/ 6%Be36<
public void sort(int[] data) { 3=W!4
quickSort(data,0,data.length-1); H5D*|42
} Jk0r&t7
private void quickSort(int[] data,int i,int j){ D5~n/.B"
int pivotIndex=(i+j)/2;
^Q&u0;OJ
file://swap QMEcQV>
SortUtil.swap(data,pivotIndex,j); ~q&pF"va8
:{(w3<i
int k=partition(data,i-1,j,data[j]); r!,}Z=cGe
SortUtil.swap(data,k,j); y1=NF
if((k-i)>1) quickSort(data,i,k-1); 1".v6caW
if((j-k)>1) quickSort(data,k+1,j); `Y?87f:SP
;;A2!w{}[i
} %7O?JI[
/** b*ef);
* @param data xnE|Umz
* @param i gNG r!3*)w
* @param j 1,5E`J
* @return ["}rk
*/ GElvz'S~
private int partition(int[] data, int l, int r,int pivot) { YIR
R=qpn
do{ ^fz+41lE\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zS]8V?`
SortUtil.swap(data,l,r); ItVugI(^ C
} V34hFa
while(l SortUtil.swap(data,l,r); d,$d~alY
return l; TY(bPq
} JMdPwI
\
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} OxGE%R,
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改进后的快速排序: ZtHm\VTS
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package org.rut.util.algorithm.support; 0kDK~iT
X\}Y
import org.rut.util.algorithm.SortUtil; rWh6RYd<T
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/** s}j1"@
* @author treeroot RmrL^asg
* @since 2006-2-2 BnRN;bu
* @version 1.0 %&
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*/ +y 87~]]
public class ImprovedQuickSort implements SortUtil.Sort { hXGwP4
e|4&b@
private static int MAX_STACK_SIZE=4096; Nm):9YQ/
private static int THRESHOLD=10; m0{ !hF[^
/* (non-Javadoc) "n:{!1VGw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "7>>I D
*/ &uUo3qXQ5l
public void sort(int[] data) { %zU`XVNN+
int[] stack=new int[MAX_STACK_SIZE]; *Ei|fe$sa
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int top=-1; ;WL1B
int pivot; 'Pvm8t
int pivotIndex,l,r; 5X.e*;
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stack[++top]=0; q2:K4
stack[++top]=data.length-1; G;3~2^lB\
Il.Ed-&62
while(top>0){ jEXW
int j=stack[top--]; H UoyLy
int i=stack[top--]; #E0t?:t5bk
i*R,QN)
pivotIndex=(i+j)/2; H&b3{yOa
pivot=data[pivotIndex]; aAu>Tn86D.
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SortUtil.swap(data,pivotIndex,j); {2`=qt2
yk2 !8
file://partition G,= yc@uq
l=i-1; x ]5@>5
r=j; `IINq{Zk
do{ \n0Oez0z!B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Cc?TSZ8[
SortUtil.swap(data,l,r); OPBt$Ki
} &/.hx(#d
while(l SortUtil.swap(data,l,r); \RQ='/H*
SortUtil.swap(data,l,j); =OJ;0 /$6
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if((l-i)>THRESHOLD){ M9!AIHq4
stack[++top]=i; hgRVwX
stack[++top]=l-1; vhr+g 'tf
} }_QKJw6/"
if((j-l)>THRESHOLD){ @&1Wyp
stack[++top]=l+1; 1G~S|,8p
stack[++top]=j; zT~B6
} Y<\^7\[x
/W#O +
} nRhrWS
file://new InsertSort().sort(data); O$`UCq
insertSort(data); }2)DPP:ic
} y%]8'q$
/** =R*Gk4<Y
* @param data _nT{g
*/ tNs~M4TVVH
private void insertSort(int[] data) { p<WFqLe(":
int temp; U3vEdw<lV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ANH4IYd3
} u%O-;>J
} o?Sla_D
} PBks`
|+
ydWtvFuS
} [_y@M
]
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归并排序: 2>S~I"o0
,$r2gr!_G
package org.rut.util.algorithm.support; 4lc)&
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import org.rut.util.algorithm.SortUtil; FYPz 4K
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/** hN`gB#N3
* @author treeroot ^o<:;{
* @since 2006-2-2 !>;w!^U
* @version 1.0 2xmk,&s
*/ X<Za9
public class MergeSort implements SortUtil.Sort{ mp`PE=
67<CbQZoN3
/* (non-Javadoc) 1q~LA[6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6i@ub%qq
*/ .PVLWW
public void sort(int[] data) { #t71U a
int[] temp=new int[data.length]; eFQQW`J
mergeSort(data,temp,0,data.length-1); y[HQBv
} 993d/z|DX
>M^&F6
private void mergeSort(int[] data,int[] temp,int l,int r){ !Cj(A"uqY
int mid=(l+r)/2; F%6*Df;cSe
if(l==r) return ; ^/KfH&E
mergeSort(data,temp,l,mid); O4+F^+qN
mergeSort(data,temp,mid+1,r); SR*Gqx
for(int i=l;i<=r;i++){ UC9{m252
temp=data; '_Wt}{h
} hjY0w
int i1=l; 9G:TW|)L[Q
int i2=mid+1; Gj6. Iv
for(int cur=l;cur<=r;cur++){ H/i<_L P
if(i1==mid+1) }z'DWp=uN
data[cur]=temp[i2++]; .:0M+Jr"
else if(i2>r) r=csi
data[cur]=temp[i1++]; 2,AaP*,
else if(temp[i1] data[cur]=temp[i1++]; g37q/nEv
else N~g%wf@w
data[cur]=temp[i2++]; CX+9R3pa
} Dr'sIH^
} Ex,JB +
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} ]V<"(?,K
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改进后的归并排序: ="lI i$>O
_W9&J&l0so
package org.rut.util.algorithm.support; G.ud1,S#
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import org.rut.util.algorithm.SortUtil; 5^F]tRz-
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/** A9n41,h
* @author treeroot .YiaXP
* @since 2006-2-2 ('BLU.7IX
* @version 1.0 ;C_ >
*/ K`gc 4:A
public class ImprovedMergeSort implements SortUtil.Sort { %^')G+>i
('HxHOh2
private static final int THRESHOLD = 10; e?vj+ZlS$f
(fd[P|G_]
/* 7sguGwg) _
* (non-Javadoc) JX&~y.F
* sS'{QIRC'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fM9xy \.
*/ lbofF==(
public void sort(int[] data) { {r{>?)O
int[] temp=new int[data.length]; OequU'j
mergeSort(data,temp,0,data.length-1); +U=KXv
} . =R=cA7
0lf"w@/
private void mergeSort(int[] data, int[] temp, int l, int r) { :3gFHBFDj
int i, j, k; `OLB';D
int mid = (l + r) / 2; K
/ZHJkJ7
if (l == r) 'v+96b/;
return; ebD{ pc`&
if ((mid - l) >= THRESHOLD) lux9o$ %
mergeSort(data, temp, l, mid); ]wR6bEm7
else mVHFT~x7}
insertSort(data, l, mid - l + 1); oo'iwq-\
if ((r - mid) > THRESHOLD) `{WCrw6)
mergeSort(data, temp, mid + 1, r); 5 Af?Yxv
else Ss+F9J
insertSort(data, mid + 1, r - mid); sHF%=Vu
XC2Q*Z
for (i = l; i <= mid; i++) { H<{*ub4'L*
temp = data; lkyJ;}_**
} }R\B.2#M_@
for (j = 1; j <= r - mid; j++) { >LCjtm\
temp[r - j + 1] = data[j + mid]; /:^tc/5U]
} DSTx#*
int a = temp[l]; |:}L<9Sq
int b = temp[r]; 'oT|cmlc
for (i = l, j = r, k = l; k <= r; k++) { i'9eKO
if (a < b) { WE7>?H*Ro
data[k] = temp[i++]; sgR
9d
a = temp; KM E XT$p
} else { `yy%<&
data[k] = temp[j--]; %jpH:-8'2
b = temp[j]; 8 `yB
} ;A`IYRzt
} D_zcOq9
} 5BZ+b_A>VV
T$f:[ye]Z
/** wbo{JQ
* @param data 5X#i65_-
* @param l aS2a_!f
* @param i ]Pz|Oi+]
*/ wrhBH;3
private void insertSort(int[] data, int start, int len) { ^V_ku@DY
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "Wxo[I
} ZE{aS4c
} $gXkx D
} +!D=SnBGs
} U;^CU!a
uv?8V@x2
堆排序: xn0s`I[
'
}y]mFpF
package org.rut.util.algorithm.support; SjFF=ib
= E##},N"
import org.rut.util.algorithm.SortUtil; &Xj {:s#
eV@4VxaZ
/** W9:fKP
* @author treeroot Cb4d|yiS8
* @since 2006-2-2 yd\5Z[iEp
* @version 1.0 (jD'+ "?
*/ V.O<|tl.
public class HeapSort implements SortUtil.Sort{ N[- %0
0[_O+u
/* (non-Javadoc) HQ ELK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m~A[V,os
*/ WsG"x>1n
public void sort(int[] data) { tg4LE?nv
MaxHeap h=new MaxHeap(); fU\k?'x_
h.init(data); we6+2
for(int i=0;i h.remove(); [ flu|v
System.arraycopy(h.queue,1,data,0,data.length); n23%[#,r
} cij]&$;Q
}3
fLV
private static class MaxHeap{ B]+7 JB
~*,Ddwr0a
void init(int[] data){ bn^mL~
this.queue=new int[data.length+1]; [XA&&EcU
for(int i=0;i queue[++size]=data; E7d~#
fixUp(size); r_qncy,F
} &etL&s v
} F:[Nw#gj/
gNMKGf\Y
private int size=0; (6b?ir ~
-+j9X;h:
private int[] queue; 0{^l2?mgSb
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public int get() { CWobvR)e
return queue[1]; .P|+oYT&g
} jWO&SW so
IL8'{<lM
public void remove() { "G i+zkVm
SortUtil.swap(queue,1,size--); ~:ub
fixDown(1); B J:E,P`_
} A$H+4L
file://fixdown /Gh
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private void fixDown(int k) { ZYl-p]\*y
int j; ^6N3n kyZ
while ((j = k << 1) <= size) { 1%]{0P0?[
if (j < size %26amp;%26amp; queue[j] j++; 4X(1
if (queue[k]>queue[j]) file://不用交换 &\WkJ}&PnA
break; ZPxOds1m
SortUtil.swap(queue,j,k); sTYuwna~
k = j; 8`rAE_n`%
} M rH%hRV6R
} z</XnN
private void fixUp(int k) { b& _i/n(
while (k > 1) { gs`27Gih
int j = k >> 1; Zo}\gg3
if (queue[j]>queue[k]) XSHwE)m
break; zn?a|kt
SortUtil.swap(queue,j,k); ^~YmLI4
k = j; 4/mj"PBKL
} 2jrX
} JUaKj@a|
>FEQtD~F
} 8YJqM,t5)
}ii]cY
} NZw[.s>n
Fm[?@Z&wP
SortUtil: oN1wrf}Sh
AIRVvW~($
package org.rut.util.algorithm; +~pc%3*
7:R{~|R
import org.rut.util.algorithm.support.BubbleSort; MR l*rK
import org.rut.util.algorithm.support.HeapSort; sP8-gkkor
import org.rut.util.algorithm.support.ImprovedMergeSort; 7K5o"
"
import org.rut.util.algorithm.support.ImprovedQuickSort; V"Y
Fu^L
import org.rut.util.algorithm.support.InsertSort; u_/OTy
import org.rut.util.algorithm.support.MergeSort; T$8$9D_u
import org.rut.util.algorithm.support.QuickSort; RGPU~L
import org.rut.util.algorithm.support.SelectionSort; TF}4X;3Dsy
import org.rut.util.algorithm.support.ShellSort; KSpC%_LC
w]+BBGYQKb
/** WY.\<$7
* @author treeroot IG3K Pmu
* @since 2006-2-2 7+Jma! o
* @version 1.0 <J_,9&\J
*/ A](}"Pi!n
public class SortUtil { krnk%ug
public final static int INSERT = 1; n-| i
public final static int BUBBLE = 2; 0.+Z;j
public final static int SELECTION = 3; Z@aL"@2]a
public final static int SHELL = 4; *mhw5Z=!
public final static int QUICK = 5; `))J8j"
public final static int IMPROVED_QUICK = 6; .1? i'8TF
public final static int MERGE = 7; t%YX-@
public final static int IMPROVED_MERGE = 8; pfn#~gC_=
public final static int HEAP = 9; Vwh&^{Eh
3b[[2x_UU
public static void sort(int[] data) { Er+3S@sfq,
sort(data, IMPROVED_QUICK); z?) RF[
} 2.L6]^N p(
private static String[] name={ )b2E/G@X&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'hHX"\|RA
}; kFZu/HRI
0-MasI&b
private static Sort[] impl=new Sort[]{ G`JwAy r'
new InsertSort(), VEYKrZA
new BubbleSort(), d~1"{WPSn
new SelectionSort(), -0J<R;cVs
new ShellSort(), @f01xh=8
new QuickSort(), LVcy.kU@]
new ImprovedQuickSort(), f!kdcr=/"
new MergeSort(), JP% ;rAoJ
new ImprovedMergeSort(), n7!Lwq2
new HeapSort() X|lmH{kf
}; :bF2b..XOu
d.(]V2X.J
public static String toString(int algorithm){ ghd[G}
return name[algorithm-1]; ]` Gz_e
} i2R]lE8
8\t7}8f
public static void sort(int[] data, int algorithm) { ]be2jQx3
impl[algorithm-1].sort(data); z8[|LF-dx
} Dq1XZ%8
EjCzou
public static interface Sort { ^|12~d_.T
public void sort(int[] data); JRs[%w`kD
} G/;aZ
IG@&l0ARL
public static void swap(int[] data, int i, int j) { .8xacVyK2
int temp = data; F"? *@L
data = data[j]; z{+; '9C
data[j] = temp; ~=]@],{
} H4",r5qw:
} >l*9DaZ