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。 w0x%7mg@
插入排序: R{~Yh.)~
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package org.rut.util.algorithm.support; fiSc\C ~
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import org.rut.util.algorithm.SortUtil; =GpO}t">
/** a;eV&~
* @author treeroot .c'EXuI7),
* @since 2006-2-2 ~y+QL{P4~
* @version 1.0 &L,zh{Mp
*/ f1;Pzr
public class InsertSort implements SortUtil.Sort{ 8>Hnv]p
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/* (non-Javadoc) L$7
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I
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*/ N(v<*jn
public void sort(int[] data) { A]2zK?|s
int temp; dA[Z\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !GcH )
} j_E$C.XU{g
} T<\Q4Coth
} >3
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冒泡排序: DCv~^
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package org.rut.util.algorithm.support; $-m`LF@
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import org.rut.util.algorithm.SortUtil; !tGXh9g
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/** zqg4@"
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* @author treeroot w%Tcx^:
* @since 2006-2-2 95;q] =U
* @version 1.0 |1H"ya
*/ Kw}-<y
public class BubbleSort implements SortUtil.Sort{ 4,kT4_&,
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/* (non-Javadoc) 'G3B02*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -A>1L@N
*/ *P&ZE
public void sort(int[] data) { Hq h
int temp; _NAKVzo-
for(int i=0;i for(int j=data.length-1;j>i;j--){ GMLq3_'
if(data[j] SortUtil.swap(data,j,j-1); -E#!`~&V
} Hd6g0
} ["}0umt
} 2E^zQ>;01
} 3k;*xjv6@
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} k/W$)b:Of`
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选择排序:
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package org.rut.util.algorithm.support; Mt)`hR+2
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import org.rut.util.algorithm.SortUtil; c6cGl]FL
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/** s{#ZRmc2B
* @author treeroot ++-\^'&1
* @since 2006-2-2 0n+Wv@/
* @version 1.0
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*/ CF3Z`xD
public class SelectionSort implements SortUtil.Sort { JK.lL]<p i
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/* ;JMd(\+-
* (non-Javadoc) wE:hl
* ig^9lM'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y\b.0-z
*/ QIVpO /@
public void sort(int[] data) { Fn*clx<
int temp; 't
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for (int i = 0; i < data.length; i++) { ,9gyHQ~
int lowIndex = i; Fxy-_%a
for (int j = data.length - 1; j > i; j--) { {~ ZSqd
if (data[j] < data[lowIndex]) { FLJdnL
lowIndex = j; Rm 1obP
} %iY-}uhO
} 09`5<9/
SortUtil.swap(data,i,lowIndex); DYJ@>8
} &GcWv+p
} TjGe8L:
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} EO$_]0yI;_
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Shell排序: 1SeDrzLA
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package org.rut.util.algorithm.support; ?U:?o_w
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import org.rut.util.algorithm.SortUtil; "|V{@)!t
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/** )nyud$9w'
* @author treeroot $A)i}M;uK
* @since 2006-2-2 %>}6>nT#
* @version 1.0 $}r*WZ
*/ g
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public class ShellSort implements SortUtil.Sort{ ~hPp)-A
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/* (non-Javadoc) g![]R-$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !EuU
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*/ B\A2Vm`&
public void sort(int[] data) { \k_0wt2x1
for(int i=data.length/2;i>2;i/=2){ QN:gSS{30
for(int j=0;j insertSort(data,j,i); gUzCDB^.:
} qlmz@kTb
} pXPwn(
insertSort(data,0,1); J6/Mm7R
} #bgW{&_y
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/** 48Y5ppcS
* @param data "*|plB
* @param j Z=n#XJO15
* @param i 8=OK8UaU
*/ \^vf`-uG
private void insertSort(int[] data, int start, int inc) { pUki!TA
int temp; [R-4e; SRh
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kVE%
"
} *IUw$|Z6z)
} B)J.(k`p
} )vO;=%GQ
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} ZvEcExA-
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快速排序: #+p30?r0y
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package org.rut.util.algorithm.support; I^sWf3'db
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import org.rut.util.algorithm.SortUtil; "&%:
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/** #=UEx
* @author treeroot w~@.&
* @since 2006-2-2 $>1 'pV
* @version 1.0 z.n`0`^
*/ N r5
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public class QuickSort implements SortUtil.Sort{ ik02Q,J
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/* (non-Javadoc) a(&!{Y1bt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HByk 1
*/ YP{)jAK
public void sort(int[] data) { e|u|b
quickSort(data,0,data.length-1); b}4k-hZL
} Hi #'h
private void quickSort(int[] data,int i,int j){ cy8+@77
int pivotIndex=(i+j)/2; ysD@yM,
file://swap NKB,D$!~&
SortUtil.swap(data,pivotIndex,j); "ut:\%39.
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int k=partition(data,i-1,j,data[j]); 4a]m=]Hm
SortUtil.swap(data,k,j); 4&;.>{:;
if((k-i)>1) quickSort(data,i,k-1); }c(".v#
if((j-k)>1) quickSort(data,k+1,j); zlzr;7m
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} "f\2/4EIl
/** zq-"jpZG
* @param data (lF;c<69
* @param i 0 (jb19
* @param j 2)]C'
* @return x"h0Fe?J
*/ ]^MOFzSz~
private int partition(int[] data, int l, int r,int pivot) { dk~ h
do{ A,D67G<v`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iaO;i1K5U
SortUtil.swap(data,l,r); uP/PVoKQ
} Vzf{gr?
while(l SortUtil.swap(data,l,r); V0+D{|thh6
return l; |$@/
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} '0x`Oh&PK
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} z!27#gbL
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改进后的快速排序: ""l_&3oz
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package org.rut.util.algorithm.support; LcCb[r
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import org.rut.util.algorithm.SortUtil; 9'F-D
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/** 7qSlqA<Hs
* @author treeroot Dt?O_Bdv[
* @since 2006-2-2 :"? boA#L
* @version 1.0 GgkljF@{}
*/ e&Z}struE
public class ImprovedQuickSort implements SortUtil.Sort { _KiaeVE
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private static int MAX_STACK_SIZE=4096; fo~8W`H&
private static int THRESHOLD=10; Q#xeu
/* (non-Javadoc) 'SF+P)Kmz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |eL&hwqzG
*/ iA*Z4FKkT
public void sort(int[] data) { Cd)e_&
int[] stack=new int[MAX_STACK_SIZE]; /=Bz[O
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int top=-1; X.<_TBos|
int pivot; b2c% 0C
int pivotIndex,l,r; Ry*NRP;
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stack[++top]=0; Knsb`1"E^6
stack[++top]=data.length-1; b9%}<w
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while(top>0){ O @fX
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int j=stack[top--]; ,GEMc a,`
int i=stack[top--]; rZ<0ks
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pivotIndex=(i+j)/2; k7P~*ll$
pivot=data[pivotIndex]; l!e8=QlJ
l=*^FK]L`
SortUtil.swap(data,pivotIndex,j); WL-+;h@VQ
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file://partition
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l=i-1; w]
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r=j; f"Yj'`6
do{ j{N;2#.u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I!lzOg4~
SortUtil.swap(data,l,r); Va Z+TE
} =MO2M~e!
while(l SortUtil.swap(data,l,r); lM Gz"cym
SortUtil.swap(data,l,j); J411bIxD+q
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if((l-i)>THRESHOLD){ ?cdSZ'49[
stack[++top]=i; _H@s^g
stack[++top]=l-1; dj4 g
} quk~z};R>\
if((j-l)>THRESHOLD){ ^qqP):0y1V
stack[++top]=l+1; Mp;t?C4
stack[++top]=j; ] ,Wh]q
} lGqwB,K$z4
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} !3Fj`Oh
file://new InsertSort().sort(data); W+PAlsOC
insertSort(data); AWCzu5ve
} ^T"9ZBkb
/** Ne*I$T 5
* @param data xjOy3_Js
*/ vgOmcf%;
private void insertSort(int[] data) { %Bmi3
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int temp; )xCpQ=nS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]3hz{zqV^
} I=&5m g=m
} _v4TyJ
} _=B(jJZ
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} 5)V]qV$
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归并排序: `
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package org.rut.util.algorithm.support; D
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import org.rut.util.algorithm.SortUtil; >`=
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/** w<j6ln+nM
* @author treeroot eJ)Bs20Q
* @since 2006-2-2 g.f!Uc{
* @version 1.0 Mo
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*/ #O]F5JB
public class MergeSort implements SortUtil.Sort{ >#dNXH]9
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/* (non-Javadoc) R6dw#;6{I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rgILOtk[
*/ * b>W
public void sort(int[] data) { |Z6rP-
int[] temp=new int[data.length]; T
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mergeSort(data,temp,0,data.length-1); oju/%ieh
} VY<v?Of
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private void mergeSort(int[] data,int[] temp,int l,int r){ AQ. Y-'\t
int mid=(l+r)/2; `d6
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if(l==r) return ; NI=t)[\F
mergeSort(data,temp,l,mid); <Sm -Z,|
mergeSort(data,temp,mid+1,r); ZA>hN3fE'
for(int i=l;i<=r;i++){ "m})~va
temp=data; -Qo`UL.}
} dW;{,Q
int i1=l; )vOZp&
int i2=mid+1; ?yddr`?W
for(int cur=l;cur<=r;cur++){ .{HU1/!
if(i1==mid+1) -"Lia!Q]M
data[cur]=temp[i2++]; h+zJ"\
else if(i2>r) s`Z(f:/6*
data[cur]=temp[i1++]; LYGFEjS[
else if(temp[i1] data[cur]=temp[i1++]; 9%oLv25{)
else xBG&ZM4"^f
data[cur]=temp[i2++]; /#9O{)
} HoymGU`w
} M]jzbJ3Q
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} ~6!=_"
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改进后的归并排序: RoM'+1nP:#
go6Hb>
package org.rut.util.algorithm.support; ,nMLua\
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import org.rut.util.algorithm.SortUtil; .,l?z
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/** &xr?yd
* @author treeroot )Be}Ev#)Zx
* @since 2006-2-2 6h}f^eJ:K,
* @version 1.0 :
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*/ LB? evewu
public class ImprovedMergeSort implements SortUtil.Sort { T'\lntN
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private static final int THRESHOLD = 10; vb9G_Pfz
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/* ; z :}OD
* (non-Javadoc) :Ff1Js(Z
* h\C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9g"a`a?c
*/ -DX|[70
public void sort(int[] data) { Y!i4P#4+q
int[] temp=new int[data.length]; e.\d7_T+
mergeSort(data,temp,0,data.length-1); Hh$D:ZO
} |g> K$m^
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private void mergeSort(int[] data, int[] temp, int l, int r) { M^mS#<!y
int i, j, k; Cf<i"
int mid = (l + r) / 2; ~c! XQJ
if (l == r) p8[Z/]p
return; U;;vNzcn
if ((mid - l) >= THRESHOLD) n0O- Bxhl
mergeSort(data, temp, l, mid); 0Vh|UJ'&7
else +?*,J=/
insertSort(data, l, mid - l + 1); JmWN/mx
if ((r - mid) > THRESHOLD) lj@c"Yrk
mergeSort(data, temp, mid + 1, r); LEc%BQx
else 1
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insertSort(data, mid + 1, r - mid); Nk86Y2h
_(<[!c!@0
for (i = l; i <= mid; i++) { xlqRW"
temp = data; u` `FD
} "^zxq5u
for (j = 1; j <= r - mid; j++) { Z)|*mJ
temp[r - j + 1] = data[j + mid]; E$4\Yc)(AL
} _4owxYSDke
int a = temp[l]; <2diO=
int b = temp[r]; }c|Xr^
for (i = l, j = r, k = l; k <= r; k++) { w80g)4V+
if (a < b) { V\PGk<VO
data[k] = temp[i++]; 0>4:(t7h\
a = temp;
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} else { o{
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data[k] = temp[j--]; d#vq+wR
b = temp[j]; ^&h|HO-5
} a)Qx43mOS
} o9<jj> R;
} }7X85@jC
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/** [US.n+G6
* @param data fwf]1@#
* @param l ;l &mA1+
* @param i OY51~#BF
*/ 'd|_ i6:y&
private void insertSort(int[] data, int start, int len) { jv5p_v4%O
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); u(\b1h n
} .?[2,4F;
} ^B1Q";#
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} }a'8lwF%I
} W _yVVr
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堆排序: U:#9!J?41
4 rw<C07Z
package org.rut.util.algorithm.support; ^WVH z;
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import org.rut.util.algorithm.SortUtil; j Bl I^
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/** !HY+6!hk
* @author treeroot 1$q SbQ
* @since 2006-2-2 {E@Vh
* @version 1.0 `V$i*{c:#
*/ FlrLXTx0
public class HeapSort implements SortUtil.Sort{ Yr,e7da
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/* (non-Javadoc) zo7Hm]W`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3O:Z;YP:<
*/ UKZsq5Q
public void sort(int[] data) { {&4+W=0
n
MaxHeap h=new MaxHeap(); R% l=NHB}
h.init(data); = =cAL"Z
for(int i=0;i h.remove(); 8qrE<RHU@
System.arraycopy(h.queue,1,data,0,data.length); /$%apci8
} ]}w~fjq
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private static class MaxHeap{ ](aXZ<,
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void init(int[] data){ ]Yp;8#:1
this.queue=new int[data.length+1]; `CUTb*{`
for(int i=0;i queue[++size]=data; }RO Cj,|
fixUp(size); [_^K}\/+
} 3*/y<Z'H
} (m|p|rL
"/(J*)%{
private int size=0; eXc`"T,C.
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T-
private int[] queue; qYl%v
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public int get() { bvUjH5.7
return queue[1]; GghZ".O
} v<ASkkh>
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public void remove() { ,*+F*:o(m
SortUtil.swap(queue,1,size--); [as\>@o
fixDown(1); ]KA|};>ow
} %S.
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file://fixdown <2fZYt vt
private void fixDown(int k) { q$yTG!q*
int j;
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while ((j = k << 1) <= size) { w+fsw@dK&
if (j < size %26amp;%26amp; queue[j] j++; 4@u*#Bp`|
if (queue[k]>queue[j]) file://不用交换 Ty}'A(U
break; :3gtc/p t>
SortUtil.swap(queue,j,k); 2>Xgo%
k = j; *_}ft-*w
} /3Zo8.
} A%-*M 'J
private void fixUp(int k) { z|Q)^
while (k > 1) { }G]6Rip3
int j = k >> 1; #e}Q|pF
if (queue[j]>queue[k]) 2y>~<S
break; D. fPHq
SortUtil.swap(queue,j,k); i/6(~v
k = j; bz[U<