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。 BGX@n#:
插入排序: fDd!Mt
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package org.rut.util.algorithm.support; :~(im_r
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import org.rut.util.algorithm.SortUtil; R%%`wmG)"
/** h uJqqC
* @author treeroot q}5A^QX
* @since 2006-2-2 K\b O[J
* @version 1.0 +HX'A C
*/ +]-KzDsr"V
public class InsertSort implements SortUtil.Sort{ lIz_0rE
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/* (non-Javadoc) Bt,Xe~$z-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R~~rqvLm
*/ =@2V#X]M*
public void sort(int[] data) { !)O$Q}'\
int temp; >| ?T|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [R4x[36Zp
} ;X(n3F
} x1wxB
1)2
} 2?QJh2
Q$1K{14I
} Nd!VR+IZ
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冒泡排序: ^>Y%L(>
W[Bu&?h$
package org.rut.util.algorithm.support; 7g)3\C
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import org.rut.util.algorithm.SortUtil; CeTr%j
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/** $]kg_l)
* @author treeroot [.X%:H+
* @since 2006-2-2 FE}!bKh
* @version 1.0 `l2q G#
*/ n5.>;N.*
public class BubbleSort implements SortUtil.Sort{ PQ}%}S7:
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c
/* (non-Javadoc) \w^QHX1+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FRFAWK<
*/ au|^V^m
public void sort(int[] data) { 9Yyg}l:
int temp; Nb~dw;t
for(int i=0;i for(int j=data.length-1;j>i;j--){ zXZ'nJ5OGG
if(data[j] SortUtil.swap(data,j,j-1); [+g@@\X4
} wkD:i 2E7
} (0W}e(D8
} Eap/7U1Q
} y.p6%E_`
fm%RNAPvc
} 7Zt\G-QV
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选择排序: -j_I_
:(>9u.>l?5
package org.rut.util.algorithm.support; -l H>8+
mE`qvavP|/
import org.rut.util.algorithm.SortUtil; >&QH{!(
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/** p{q!jm~Nq
* @author treeroot 4q13xX
* @since 2006-2-2 c1kxKxE
* @version 1.0 W@,p9=425
*/ KC:4
public class SelectionSort implements SortUtil.Sort { T:dm0i au
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/* ]"Y%M'
* (non-Javadoc) kQVDC,d
* ~9r!m5ws
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S9R]Zl7{-
*/ k0_$M{@Y
public void sort(int[] data) { qQOD
int temp; _1<'"u#6w
for (int i = 0; i < data.length; i++) { ,|X+/|gm
int lowIndex = i; 3g[j%`k
for (int j = data.length - 1; j > i; j--) { p*`SGX
if (data[j] < data[lowIndex]) { ^Opy6Bqb
lowIndex = j; neh;`7~5@K
} H:-A; f!Z
} x$GsDV
SortUtil.swap(data,i,lowIndex); xDJ+BQ<1A
} l(#ke
} rLh9`0|D
VS|("**
} X@qk> /
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Shell排序: ,LW+7yD
Y^2Qxo3"3
package org.rut.util.algorithm.support; s
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import org.rut.util.algorithm.SortUtil; kAN;S<jSE
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/** s`=/fvf.
* @author treeroot eKVALUw
* @since 2006-2-2 g&+Y{*Gp
* @version 1.0 Vp$wHB&
*/ M6]0Y@@>
public class ShellSort implements SortUtil.Sort{ /^LH
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/* (non-Javadoc) :vK(LU0K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +K;Y+
K&;2
*/ aLKMDiT
public void sort(int[] data) { m0j|58~
for(int i=data.length/2;i>2;i/=2){ ~J1;tZS
for(int j=0;j insertSort(data,j,i); z0 2}&^Zzk
} x(9;!4O>
} Fkcx+d
insertSort(data,0,1); Jf?S9r5 Q
} Er"R;l]xJ
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/** |,;twj[?4
* @param data x^)g'16`
* @param j ^p 2.UW
* @param i g={]Mzh
*/ N&fW9s}
private void insertSort(int[] data, int start, int inc) { *O+R|Cdp/
int temp; mN\%fJ7
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v._Egk0
} K[uY+!'1
} j9URl$T:
} "($Lx
jVad)2D
} 0{?:FQ#
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快速排序: B;z;vrrL
Cf0|Z
package org.rut.util.algorithm.support; W?qpnPW
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import org.rut.util.algorithm.SortUtil; .4Qb5I2#
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/** 17>5#JLP
* @author treeroot *A?8F"6>
* @since 2006-2-2 t_dcV%=
* @version 1.0 nnt8 sf@\
*/ [D3+cDph
public class QuickSort implements SortUtil.Sort{ *8$>Whr
lSH ZV
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/* (non-Javadoc) I&L.;~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |DN^NhtE
*/ 6xH;:B)d
public void sort(int[] data) { >=if8t!
quickSort(data,0,data.length-1); 4|[<e-W
} ,~(|p`
private void quickSort(int[] data,int i,int j){ :KEq<fEI
int pivotIndex=(i+j)/2; 3A-*vaySV
file://swap 7MY)\aH
SortUtil.swap(data,pivotIndex,j); $hh+0hs
gUl1CH&
int k=partition(data,i-1,j,data[j]); `-VG ?J
SortUtil.swap(data,k,j); Hx$.9'Oq\Q
if((k-i)>1) quickSort(data,i,k-1); Da-u-_~
if((j-k)>1) quickSort(data,k+1,j); -Q6(+(7_|
,09DBxQq,
} 0|g[o:;fl_
/** ]?[zx'|
* @param data pvlDjj}
* @param i R.K?
* @param j %/5 1o6a
* @return P{?;T5ap6
*/ C1b*v&1{
private int partition(int[] data, int l, int r,int pivot) { z&O#v9.NE|
do{ 0!pJ5q ,A
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W!t{rI7 2
SortUtil.swap(data,l,r); gNqAj# m
} E Zi &]
while(l SortUtil.swap(data,l,r); 69>/@<
return l; Mm5c8[
} RT,:hH
wTxbDT@ H5
} E>E*ZZuhj
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改进后的快速排序: _BbvhWN&+
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package org.rut.util.algorithm.support; k@yh+ v5
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import org.rut.util.algorithm.SortUtil; 6ZcXS
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/** xYPxg!
* @author treeroot H(b)aw^(%
* @since 2006-2-2 |d[5l^6
* @version 1.0 !scD|ti
*/ t8P PE
public class ImprovedQuickSort implements SortUtil.Sort { \8e2?(@"k
lbTV$A
private static int MAX_STACK_SIZE=4096; HJIC<U
private static int THRESHOLD=10; "N 3)Qr
/* (non-Javadoc) \9`#]#1bx5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8#w)X/
*/ k[%aCGo
public void sort(int[] data) { Or8kp/d
int[] stack=new int[MAX_STACK_SIZE]; /,2rjJ#b
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int top=-1; l(!/Q|Q|
int pivot; D<>@
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int pivotIndex,l,r; u#@RM^738d
.XS9,/S
stack[++top]=0; rQb7?O@-
stack[++top]=data.length-1; -R
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_[t8rl
while(top>0){ eVJ^\z:4
int j=stack[top--]; bWmw3w
int i=stack[top--]; ^nNitF
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pivotIndex=(i+j)/2; [ *>AN7W
pivot=data[pivotIndex]; [c~kF+8
V
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SortUtil.swap(data,pivotIndex,j); aJzLrX
Rko M~`CT
file://partition .UQE{.?
l=i-1; i{Ds&{
r=j; <CZgQ\Mt
do{ , jU5|2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $!B}$I;cd
SortUtil.swap(data,l,r); #+k*1Jg
} ~TqT}:,H
while(l SortUtil.swap(data,l,r);
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SortUtil.swap(data,l,j); `\CVV*hP
esX)"_xf
if((l-i)>THRESHOLD){ jQ+sn/ROp
stack[++top]=i; fQdK]rLj
stack[++top]=l-1; /?*]lH.
} R[jEvyD>(
if((j-l)>THRESHOLD){ Kr-G{b_Pp
stack[++top]=l+1; E\U`2{^.
stack[++top]=j; @7<uMasfp
} :J/M,3
Ba'LRz
} Ii&7rdoxe
file://new InsertSort().sort(data); +&i +Mpb
insertSort(data); u0Nm.--;_3
} MTOy8 Im
/** U;q];e:,=}
* @param data 6"f}O<M5H
*/ hA1-){aw3q
private void insertSort(int[] data) { SF*n1V3hx
int temp; T~:|!`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0#*Lw }qi
} yR;{
} iyta;dw9
} VQ#3#Hj
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} "Wo,'8{v
Pr ]Ka
归并排序: *%/~mSx
umi5Wb<
package org.rut.util.algorithm.support; 5L,}e<S$
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import org.rut.util.algorithm.SortUtil; T"7~AbgNU
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/** Vv1|51B
* @author treeroot G uQ=gN
* @since 2006-2-2 9o*,P,j'}
* @version 1.0 YuZ"s55zU{
*/ )B,|@ynu
public class MergeSort implements SortUtil.Sort{ a]
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/* (non-Javadoc) 10!wqyj&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OCZaQ33
*/ r%:+$aIt
public void sort(int[] data) { K*UgX(xu4P
int[] temp=new int[data.length]; Urr#N
mergeSort(data,temp,0,data.length-1); <Rh6r}f
} HK|ynBAo
./Q,
private void mergeSort(int[] data,int[] temp,int l,int r){ <\kr1qHH
int mid=(l+r)/2; tyaA\F57
if(l==r) return ; $/!{OU.t`
mergeSort(data,temp,l,mid); !*6CWV0
mergeSort(data,temp,mid+1,r); J+d1&Tw&
for(int i=l;i<=r;i++){ 2{|h8oz
temp=data; .`>y@p!
} a:QDBS2Llv
int i1=l; 34\(7JO
int i2=mid+1; V3 ~~
for(int cur=l;cur<=r;cur++){ |$5[(6T|
if(i1==mid+1) 5j~$Mj`
data[cur]=temp[i2++]; e[hcJz!D
else if(i2>r) Aq3}Ng
data[cur]=temp[i1++]; V5*OA??k<
else if(temp[i1] data[cur]=temp[i1++]; ,#pXpAz/
else ^Q+g({
data[cur]=temp[i2++]; yX~v-N!X
} pAT7)Ch
} GnvL'ESa@M
j~*L~7
} w*R$o
RjN{%YkXe
改进后的归并排序: uu`G 2[t
;Iq/l%vX
package org.rut.util.algorithm.support; Z?\>JM >;
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import org.rut.util.algorithm.SortUtil; P#AW\d^"B
t. ;LnrY
/** 6i}iAP|0
* @author treeroot K.0:C`C
* @since 2006-2-2 Cg(Y&Gxf.
* @version 1.0 .0es3Rj
*/ b9!FC$^J
public class ImprovedMergeSort implements SortUtil.Sort { WYr/oRO
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private static final int THRESHOLD = 10; <~WsD)=$
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/* >D4#y
* (non-Javadoc) 8SGo9[U2
* ga`3 (
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :\|SQKD
*/ 9E6_]8rl
public void sort(int[] data) { `E>1>'
int[] temp=new int[data.length]; Ig
f&l`\
mergeSort(data,temp,0,data.length-1); "yS _s
} P}4QQw
u?}(P_9
private void mergeSort(int[] data, int[] temp, int l, int r) { I"ok&^t^}
int i, j, k; f.9SB
int mid = (l + r) / 2; R#I0|;q4|p
if (l == r) 5rU[Tir
return; Sn|BlXrey
if ((mid - l) >= THRESHOLD) V{!J-nO
mergeSort(data, temp, l, mid); y2^Y/)
else H*r)Z90
insertSort(data, l, mid - l + 1); N'GeHByIT
if ((r - mid) > THRESHOLD) T:=lz:}I
mergeSort(data, temp, mid + 1, r); MB~=f[cUnd
else IhVO@KJI
insertSort(data, mid + 1, r - mid); l`f/4vy
6V7B;tB
for (i = l; i <= mid; i++) { a m|F?|1
temp = data; ;5659!;
} 24z< gO
for (j = 1; j <= r - mid; j++) { A\HxDIU
temp[r - j + 1] = data[j + mid]; ;6>2"{NW
} f,018]|
int a = temp[l]; sTn<#l6
int b = temp[r]; 0.8 2kl
for (i = l, j = r, k = l; k <= r; k++) { WE: 24b6
if (a < b) { m}7iTDJR9
data[k] = temp[i++]; AP'*Nh@Ik(
a = temp; XovRg,
} else { qVH1}9_
data[k] = temp[j--]; _./Sk|C
b = temp[j]; 2AT5
} 6ZP(E^.
} {xXsBh
Y
} >n'o*gZM
1H6<[iHW
/** "@iK'
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* @param data :bwjJ}F
* @param l y1dDO2mA
* @param i n*[XR`r}
*/ ;:\<gVi:
private void insertSort(int[] data, int start, int len) {
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fF7bBE)L/|
} `d5%.N
} RI(DXWM|h
} 9]f!'d!5
} tX_R_]v3
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堆排序: ;f#v0W`5
p@xf^[50k
package org.rut.util.algorithm.support; _m5uDF?[
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import org.rut.util.algorithm.SortUtil; Oo5w?+t
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/** ILEz;D{]
* @author treeroot 4|riKo)
* @since 2006-2-2 gQ Fjr_IS#
* @version 1.0 %5M/s'O?i
*/ WrQD X3
public class HeapSort implements SortUtil.Sort{ X' H[7 ^W
<D<4BnZ(
/* (non-Javadoc) ,(d)Qg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G_bG
*/ 8m2Tk\;:
public void sort(int[] data) { \<JSkr[h!"
MaxHeap h=new MaxHeap(); 7K,-01-:
h.init(data); A9I{2qW9+Z
for(int i=0;i h.remove(); 3er nTD*`
System.arraycopy(h.queue,1,data,0,data.length); l=S 35og
} ~.{/0T
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private static class MaxHeap{ :ubV };
4>F'oqFF
void init(int[] data){ 0m%|U'm|j
this.queue=new int[data.length+1]; 5D\f8L
for(int i=0;i queue[++size]=data; {> eXR?s/
fixUp(size); [I'0,y
} nw -xSS{
} gw#5jW\
s.bc>E0
private int size=0; 27
]':A4_
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private int[] queue; ]zj9A]i:a
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public int get() { ^U
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return queue[1]; Ixb=L(V
} 2|3)S`WZl
RQ vft
public void remove() { U
9_9l7&r
SortUtil.swap(queue,1,size--); (D#B_`;-
fixDown(1); Oft-w)cYz,
} -I*^-+>H
file://fixdown 7!@-*/|!S9
private void fixDown(int k) { cii_U=
int j; .{ocV#{s
while ((j = k << 1) <= size) { jN{Xfjmfv
if (j < size %26amp;%26amp; queue[j] j++; S^-DK~Xt4
if (queue[k]>queue[j]) file://不用交换 K&vF0*gN3
break; <;vbsksZeH
SortUtil.swap(queue,j,k); zMj#KA1
k = j; ]$ L|
} mw_~*Nc'9
} YLqGRE`W
private void fixUp(int k) { {IxA)v-`
while (k > 1) { Eo{"9j\
int j = k >> 1; ^8 z R
if (queue[j]>queue[k]) [$qyF|/K`n
break; /xsF90c\h
SortUtil.swap(queue,j,k); U &C!}
k = j; -e_hrCW&9
} -=%@L&y1
} JLnH&(O
XRcq hv
} {_7i8c<s=
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} CnpV:>V=
*!q1Kr6r
SortUtil: C`$n[kCJ
l n{e1':$"
package org.rut.util.algorithm;
3L<wQ(
7op`s5i
import org.rut.util.algorithm.support.BubbleSort; &+cEV6vb+
import org.rut.util.algorithm.support.HeapSort; iIMd!Q.)@
import org.rut.util.algorithm.support.ImprovedMergeSort; 3vuivU.3
import org.rut.util.algorithm.support.ImprovedQuickSort; G0/4JSH
import org.rut.util.algorithm.support.InsertSort; T ?$:'XJ
import org.rut.util.algorithm.support.MergeSort; 5]NqRI^0
import org.rut.util.algorithm.support.QuickSort; (zgW%{V@
import org.rut.util.algorithm.support.SelectionSort; 0xxg|;h.,g
import org.rut.util.algorithm.support.ShellSort; d6'{rje(
c9HrMgW
/** n!NS(.o
* @author treeroot tXoWwQD;Y
* @since 2006-2-2 q;R],7Re
* @version 1.0 5"CZh.J
*/ +1uF !G&l
public class SortUtil { RX>xB
public final static int INSERT = 1; GC?ON0g5s
public final static int BUBBLE = 2; syWG'(>
public final static int SELECTION = 3; Ir
{OheJ
public final static int SHELL = 4; s"0Y3x3
public final static int QUICK = 5; oI=fx Sjd
public final static int IMPROVED_QUICK = 6; 0O9Ni='Tn
public final static int MERGE = 7; 4[.oPK=i
public final static int IMPROVED_MERGE = 8; F<L
EQ7T
public final static int HEAP = 9; 3?c3<`TW
IAw{P08+
public static void sort(int[] data) { !
='rc-E
sort(data, IMPROVED_QUICK); Hc>m;[M)l
} ]QpWih00V
private static String[] name={ j<Bkj/
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <L"GqNuRQ
}; U*i{5/$
b:Wm8pp?
private static Sort[] impl=new Sort[]{ spdvZU=}
new InsertSort(), 55tKTpV
new BubbleSort(), { vKLAxc
new SelectionSort(), o$#G0}yn
new ShellSort(), -&3hEv5
new QuickSort(), 4? ICy/,U-
new ImprovedQuickSort(), gLE:g5v6
new MergeSort(), I,0q4
new ImprovedMergeSort(), JBi*P.79^
new HeapSort() V#XppYU
}; )\eI;8
%+j8["VEC
public static String toString(int algorithm){ L W[9
return name[algorithm-1]; m;'6MHx;
} PK{acen
jF0jkj1&/[
public static void sort(int[] data, int algorithm) { )+[ gd/<C.
impl[algorithm-1].sort(data); P0W*C6&71|
} UJM1VAJ0
)Qe~8u@?
public static interface Sort { pimtiQqC
public void sort(int[] data); HkO7R
`
} l|/ep:x8
#:[t^}
public static void swap(int[] data, int i, int j) { mVVD!
int temp = data; (#Wu#F1;
data = data[j]; 9fhsIe
data[j] = temp; VHCK2}ps
} KVn []@#
} YL]Z<%aKt