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。 gzqp=I[%
插入排序: -zn_d]NV
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package org.rut.util.algorithm.support; ?w'86^_z
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import org.rut.util.algorithm.SortUtil; Hk@Gkx_
/** K1BBCe
* @author treeroot ciiI{T[Z
* @since 2006-2-2 '21gUYm
* @version 1.0 )wCNLi>4
*/ z7gX@@T
public class InsertSort implements SortUtil.Sort{ CfSP*g0rW
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/* (non-Javadoc) (_<,Oj#*S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t89Tt @cf
*/ a!-J=\>9
public void sort(int[] data) { c.b| RM0;
int temp; o|xZ?#^h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |3yG
} #0Y_!'j
} H,5]w\R6\
} kltW
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} Rz|@BxB>n
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冒泡排序: `>`b;A4
|:JT+a1
package org.rut.util.algorithm.support; Xa.8-a"hz
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import org.rut.util.algorithm.SortUtil; Ez0zk9
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/** (.V),NKG
* @author treeroot i,a"5DR8
* @since 2006-2-2 h]k$K
* @version 1.0 ^bfZd
*/ -~lq <M
public class BubbleSort implements SortUtil.Sort{ ,xVAJ6_#
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/* (non-Javadoc) )"6-7ii7(f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y32$b,%Xi,
*/ L/exR6M7
public void sort(int[] data) { vno/V#e$WX
int temp; Q
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for(int i=0;i for(int j=data.length-1;j>i;j--){ j]<K%lwp
if(data[j] SortUtil.swap(data,j,j-1); B 5|\<CF
} }UB@FRPF
} OQB7C0+ &
} HNv~ZAzBG-
} [K\b"^=<
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} !e~[U-
m 0vW<
选择排序: 0FI
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-|KZOea
package org.rut.util.algorithm.support; PBCGC^0{
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import org.rut.util.algorithm.SortUtil; h )5S4)
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/** /G'3!S
* @author treeroot A8*zB=C
* @since 2006-2-2 U].]K
* @version 1.0 ">z3i`#C'
*/ tMX$8W0
c
public class SelectionSort implements SortUtil.Sort { 62qjU<Z
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/* ^zQI_ydG
* (non-Javadoc) 60u_,@rV
* qE8aX*A1/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #xw*;hW<
*/ !h7.xl OpN
public void sort(int[] data) { iP"sw0V8
int temp; +|,4g_(j
for (int i = 0; i < data.length; i++) { I"vkfi#=
int lowIndex = i; X]D,kKasG
for (int j = data.length - 1; j > i; j--) { DI{*E
if (data[j] < data[lowIndex]) { 9"]#.A^Q*
lowIndex = j; ucx02^uA
} }}QR'
} @|vH5Pi
SortUtil.swap(data,i,lowIndex); }\?9Prsd
} x'I!f? / &
} </`\3t
?}4,s7PR
} ~s'tr&+
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Shell排序: jTcv&`fAz
ZDW=>}~_y
package org.rut.util.algorithm.support; ;x/eb g
lnyfAq}w
import org.rut.util.algorithm.SortUtil; Y-a
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/** (jDz[b#OPz
* @author treeroot }r5yAE
* @since 2006-2-2 `IUn{I
* @version 1.0 UE.kR+1
*/ KaNs>[a8
public class ShellSort implements SortUtil.Sort{ Z%qtAPd
3>aEP5
/* (non-Javadoc) bPU
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?zf3Fn2y
*/ zR^Gy"
public void sort(int[] data) { i9DD)Y<
for(int i=data.length/2;i>2;i/=2){ M>]A!W=
for(int j=0;j insertSort(data,j,i);
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} sE6>JaH
} *c94'T cl
insertSort(data,0,1); Lr$Mk#'B
} {4G/HW28
c
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/** #;j:;LRU
* @param data WI/tWj0
* @param j Ec@n<KK#
* @param i 2+
cs^M3
*/ Szgo@x$^
private void insertSort(int[] data, int start, int inc) { wwB3m&
int temp; Lz'VQO1U=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *7jz(iX
} 0B]q /G(
} +y?Ilkk;j
} Z,.Hz\y1D
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} Y#ZgrziYM
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快速排序: \:WWrY8&
Kf[d@L
package org.rut.util.algorithm.support; rR> X<
S=(O6+U
import org.rut.util.algorithm.SortUtil; o[Jzx2A<
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/** ){5Nod{}a
* @author treeroot @owneSD qN
* @since 2006-2-2 4VwF\
* @version 1.0 V*uE83x1
*/ !wfW0?eu
public class QuickSort implements SortUtil.Sort{ 9Ux(
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/* (non-Javadoc) =1l6(pJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rG-T Dm
*/ .:r~?$(
public void sort(int[] data) { ?dgyi4J?=`
quickSort(data,0,data.length-1); Q!e560@
} 6st
private void quickSort(int[] data,int i,int j){ `r`8N6NQ&]
int pivotIndex=(i+j)/2; :}lqu24K
file://swap X g6ezlW
SortUtil.swap(data,pivotIndex,j); FPDTw8" B;
CI'RuR3y]Z
int k=partition(data,i-1,j,data[j]); iAwEnQ3h
SortUtil.swap(data,k,j); ^a4z*#IOr
if((k-i)>1) quickSort(data,i,k-1); x;n3 Zr;(
if((j-k)>1) quickSort(data,k+1,j); F)LbH&Kn
5`QcPDp{z
} t;e&[eg
/** M6)
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* @param data lM6pYYEq=
* @param i Gmz^vpQ]t
* @param j 0@
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* @return AG N/kx
*/ i+*!"/De
private int partition(int[] data, int l, int r,int pivot) { P=QxfX0B
do{
9r!8BjA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %=`JWLLG
SortUtil.swap(data,l,r); kJWg},-\
} Hc)z:x;Sj
while(l SortUtil.swap(data,l,r); {{?g%mQ6
return l; Xu] ~vik
} 2?JV "O=
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}
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改进后的快速排序: L8VOiK=,
;o_F<68QP
package org.rut.util.algorithm.support; !(GyOAb
P!eo#b^S
import org.rut.util.algorithm.SortUtil;
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/** 8h=t%zMSb
* @author treeroot f!9i6
* @since 2006-2-2 4<y
* @version 1.0 8QrpNSj4
*/ j[G`p^ul
public class ImprovedQuickSort implements SortUtil.Sort { jf~](TK
k?+ 7%A]
private static int MAX_STACK_SIZE=4096; l|P"^;*zq
private static int THRESHOLD=10; Yj/afn(Jt
/* (non-Javadoc) 'NEl`v*<P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u^"
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*/ \Z[1m[{
public void sort(int[] data) { d1<";b2Jt^
int[] stack=new int[MAX_STACK_SIZE]; -50DGA,K6
(%my:\>l
int top=-1; #De>EQ%
int pivot; #,%bW[L<N
int pivotIndex,l,r; ?d7,0Ex
P
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stack[++top]=0; -NBVUUAgN
stack[++top]=data.length-1; V(MYReaPC]
f[@96p?a[
while(top>0){ .H" ?&Mf
int j=stack[top--]; AUnfhk@$
int i=stack[top--]; 8tj]@GE
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pivotIndex=(i+j)/2; n|( lPbD
pivot=data[pivotIndex]; _f1o!4ocx
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SortUtil.swap(data,pivotIndex,j); VW-qQe
B~p%pTS+
file://partition !J$r|IX5
l=i-1; k^J8 p#`6
r=j; 8<=^Rkz
do{ o?`FjZ6;x
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J]F&4O
SortUtil.swap(data,l,r); m{\
&
k
} smP4KC"I(d
while(l SortUtil.swap(data,l,r); *_(X$qfoW
SortUtil.swap(data,l,j); Nu5|tf9%A
iQ'*QbP'Z
if((l-i)>THRESHOLD){ pRd.KY -<
stack[++top]=i; yPN '@{ 5#
stack[++top]=l-1; I652Fcj
} ARKM[]
if((j-l)>THRESHOLD){ qE[S>/R"
stack[++top]=l+1; hFrMOc&
stack[++top]=j; "-~7lY%
} |5&+VI
GEc6;uz<
} F B]Y~;(
file://new InsertSort().sort(data); Y|>dS8f;4
insertSort(data); VoU8I ~
} U0x
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/** YvR bM
* @param data r/Y J, 2!
*/ USg"wJY
private void insertSort(int[] data) { acd[rjeT
int temp; ~iL^KeAp
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uo9#(6
} h0{X$&:
} dSM\:/t
} F.9}jd{
Un?|RF
} @@65t'3S
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归并排序: iC"iR\Qu
){^J8]b7#
package org.rut.util.algorithm.support; WtT;y|W
8=8hbdy;
import org.rut.util.algorithm.SortUtil; lx)^wAO4
@X==[gQ
/** q+ax]=w
* @author treeroot MpV<E0CmE
* @since 2006-2-2 /bo}I-<2
* @version 1.0 Z)?$ZI@
*/ YQBLbtn6(
public class MergeSort implements SortUtil.Sort{ V6]6KP#D
6(n0{A
/* (non-Javadoc) cgnNO&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )U/jD
*/ R9J!}az'
public void sort(int[] data) { $7x2TiAL
int[] temp=new int[data.length]; s8h*nZ)v
mergeSort(data,temp,0,data.length-1); <b 5DX
} Aoe\\'O|V
F/5&:e?( )
private void mergeSort(int[] data,int[] temp,int l,int r){ :eN&wQ5q
int mid=(l+r)/2; tsXKhS;/w
if(l==r) return ; +
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mergeSort(data,temp,l,mid); tl#sCf!c
mergeSort(data,temp,mid+1,r); Vk2$b{VdF
for(int i=l;i<=r;i++){ wKJG 31I^
temp=data; I^NDJdxd
} !T6R[
int i1=l; Oa|c ?|+
int i2=mid+1; 9*qwXU_aV
for(int cur=l;cur<=r;cur++){ c=m'I>A
if(i1==mid+1) D#;7S'C
data[cur]=temp[i2++]; *2AD#yIKC
else if(i2>r) Pv -4psdw
data[cur]=temp[i1++]; FI.te3i?7
else if(temp[i1] data[cur]=temp[i1++]; O?uICnmi6
else 4~fYG| a
data[cur]=temp[i2++]; NL21se
} 5pQpzn=
} .. `I<2
Q\Ek U.[I
} Ailq,c
JEjxY&
改进后的归并排序: HC iRk1
!=0h*=NOYt
package org.rut.util.algorithm.support; uibmQ|AQ
I8xdE(o8+
import org.rut.util.algorithm.SortUtil; 'l*X?ccKy
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/** z^bS+0S5x!
* @author treeroot VAPeMO
ck
* @since 2006-2-2 U]PB)
* @version 1.0 !~#zd]0x;
*/ pH'_k k
public class ImprovedMergeSort implements SortUtil.Sort { ^<I(
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private static final int THRESHOLD = 10; @16GF!.
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/* 7=-Yxt
* (non-Javadoc) 8>KUx]AN
* m:@y_:X0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )+.=z
*/ zPt<b!q
public void sort(int[] data) { Be6Yh~m
int[] temp=new int[data.length]; mU5Ox4>&9
mergeSort(data,temp,0,data.length-1); t. P@Ba^
} ,!orD1,'
yl[I'fX66
private void mergeSort(int[] data, int[] temp, int l, int r) { abo=v<mR
int i, j, k; .}IW!$
dq
int mid = (l + r) / 2; K[[~G1Z
if (l == r) |UTajEL
return; (W}F\P
if ((mid - l) >= THRESHOLD) WZQ2Mi<&1'
mergeSort(data, temp, l, mid); c'oiW)8;A
else X^\D"fmE.
insertSort(data, l, mid - l + 1); P6+ B!pY
if ((r - mid) > THRESHOLD) nI:M!j5s`
mergeSort(data, temp, mid + 1, r); 5(>=};r+
else -.Wcz|
insertSort(data, mid + 1, r - mid); nCQtn%j't
=%<=Bn
for (i = l; i <= mid; i++) { hGtz[u#p
temp = data; PR8nJts W5
} >|taU8^|G}
for (j = 1; j <= r - mid; j++) { *5)UIRd
temp[r - j + 1] = data[j + mid]; bP18w0>,
} ,`geOJn'
int a = temp[l]; s%)f<3=a
int b = temp[r]; ;Y7'U rn
for (i = l, j = r, k = l; k <= r; k++) { #Y7jNrxE
if (a < b) { '1mk;%
data[k] = temp[i++]; O= S[n
a = temp; VLXA6+
} else { ddQ+EY@!
data[k] = temp[j--]; k]m ~DVS
b = temp[j]; P$EiD+5#z
} jVff@)_S
} Kg%9&l
} P:{Aqn~zR
JduO^Fit
/** J"aw 1
* @param data ZHTi4JY
* @param l 1T!o`*
* @param i A
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*/ }0'LKwIR
private void insertSort(int[] data, int start, int len) { |] 7c&`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -1Q24jrO-
} Xm#W}Y'
} D{(}&8a9
} [F6)Z[uG
} +|/0sPW(
M%E<]H2;S
堆排序: M<-Q8a~
;,77|]<XE
package org.rut.util.algorithm.support; Oiib2Ov
#b ^6>
import org.rut.util.algorithm.SortUtil; UarLxPQ
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/** '+9<[]
* @author treeroot DzVCEhf
* @since 2006-2-2 VrIN.x
* @version 1.0 <^YvgQ,m
*/ Yq ]sPE92
public class HeapSort implements SortUtil.Sort{ 1jKpLTSs
^lp=4C9
/* (non-Javadoc) Q.N!b7r7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~.T|n =
*/ w)7y{ya$
public void sort(int[] data) { ;W-
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MaxHeap h=new MaxHeap(); 2 7)IfE
h.init(data); 505c(+
for(int i=0;i h.remove(); mG~kf]Y
System.arraycopy(h.queue,1,data,0,data.length); "rBB&l
} TAG@Ab
wV )\M]@
private static class MaxHeap{ Ph^1Ko"2
u+8"W[ZULq
void init(int[] data){ \,13mB6
this.queue=new int[data.length+1]; '8 .JnCg
for(int i=0;i queue[++size]=data; U'=8:&
fixUp(size); 7r;16"
} J4+K)gWB
} ;"M6}5dQ4
~vXbh(MX
private int size=0; 8dR `T}
8&JB_%Gb
private int[] queue; ny
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public int get() { vn}m-U XA*
return queue[1]; {0,b[
} t?"(Zb
J%?5d:iN+
public void remove() { d5^^h<'
SortUtil.swap(queue,1,size--); 9"#C%~=+
fixDown(1); v~ >Bbe
} k2
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file://fixdown UF-&L:s[
private void fixDown(int k) { v~SM"ky#
int j; Bz/ba *
while ((j = k << 1) <= size) { ~cc }yDe
if (j < size %26amp;%26amp; queue[j] j++; 4EM+ Ye
if (queue[k]>queue[j]) file://不用交换 xt}.0dC!/%
break; O}i+1
SortUtil.swap(queue,j,k); _eGYwBm
k = j; C:Jfrg`
} YrnC'o`
} DgT]Nty@b
private void fixUp(int k) { 5Npxs&Ea
while (k > 1) { ]hV!lG1_
int j = k >> 1; UOb`@#
if (queue[j]>queue[k])
]@ruizb8
break; 1^|#QMT
SortUtil.swap(queue,j,k); #1-WiweO
k = j; x+cL(R
} o8X_uKEI
} _0+X32HjJ
Q/g!h}>(.
} P")I)>Q6
t*hy"e{*a
} \
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hJ(vDv%
SortUtil: <|l}@\iRX
'Q=;I
package org.rut.util.algorithm; uE.BB#
_M%>Q m
import org.rut.util.algorithm.support.BubbleSort; Z3&}C h
import org.rut.util.algorithm.support.HeapSort; wp@_4Iq1$
import org.rut.util.algorithm.support.ImprovedMergeSort; (iq>]-=<
import org.rut.util.algorithm.support.ImprovedQuickSort; 9s<4`oa
import org.rut.util.algorithm.support.InsertSort; Cn/WNCzst&
import org.rut.util.algorithm.support.MergeSort; %T]$kF++&
import org.rut.util.algorithm.support.QuickSort; 1
tOslP@
import org.rut.util.algorithm.support.SelectionSort; lU doMm
import org.rut.util.algorithm.support.ShellSort; WkXgz6 P
_tHhS@
/** M z&/.A
* @author treeroot l:'#pZ4T
* @since 2006-2-2 0h A: =r
* @version 1.0 =.z;:0]'n
*/ >e {1e
public class SortUtil { q;,lv3I
public final static int INSERT = 1; bkd`7(r
public final static int BUBBLE = 2; u@dvFzc
public final static int SELECTION = 3; <<!fA><W
public final static int SHELL = 4; 9)7$U QY
public final static int QUICK = 5; AJ%E.+@=r
public final static int IMPROVED_QUICK = 6; "AUSgVE+h
public final static int MERGE = 7; u9~5U9]O%6
public final static int IMPROVED_MERGE = 8; A1/@KC"&{G
public final static int HEAP = 9; :&wb+tV
xnMcxys~
public static void sort(int[] data) { !64Tx
sort(data, IMPROVED_QUICK); 0Agse)
} <yipy[D
private static String[] name={ F
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" wPM&N@Pf
}; s)- ;74(
wj6u,+
private static Sort[] impl=new Sort[]{ Hk*1Wrs*
new InsertSort(), e' M&Eh
new BubbleSort(), KhND
pwO"
new SelectionSort(), K.xABKPVc
new ShellSort(), y.lWyH9
new QuickSort(), d%|l)JF*5
new ImprovedQuickSort(), v82wnP-~7
new MergeSort(), =sk[I0W
new ImprovedMergeSort(), p
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new HeapSort() r>(,)rs(l
}; vS\ 2zwb}
yD~,+}0)
public static String toString(int algorithm){ $6Q^ur:
return name[algorithm-1]; mcQL>7ts
} VaD+:b4
_CHzwNU
public static void sort(int[] data, int algorithm) { AtJ{d^
impl[algorithm-1].sort(data); u79- B-YW^
} f(pq`v^-n
_e@8E6#ce
public static interface Sort { #VrIU8Q7'
public void sort(int[] data);
I6
?(@,
} B,\VLX
t}eyfflZ
public static void swap(int[] data, int i, int j) { %]Z4b;W[Y
int temp = data; '{AB{)1
data = data[j]; ~uc7R/3ss
data[j] = temp; qA GjR!=^
} w*6b%h%ww
} 74M 9z