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。 Pd)mLs Jg
插入排序: PKJ w%.-
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package org.rut.util.algorithm.support; }"Clv/3_
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import org.rut.util.algorithm.SortUtil; Zcjh
/** lxf+$Z`~:
* @author treeroot .k cyw>T`I
* @since 2006-2-2 e w?4;
* @version 1.0 "Doz~R\\
*/ FN\*x:g
public class InsertSort implements SortUtil.Sort{ Xh+;$2l.B
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/* (non-Javadoc) xPCRT*Pd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T\q:
*/ 9eBD)tnw
public void sort(int[] data) { >P@g].Q-
int temp; a5caryZ"z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y7BmW+
} gamE^Ee
} TophV}@B`
} >cJix
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} VkFMr8@|
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冒泡排序: u:.w/k%+
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package org.rut.util.algorithm.support; Y
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import org.rut.util.algorithm.SortUtil; |yS %
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/** SP.k]@P
* @author treeroot 0RgE~x!hI
* @since 2006-2-2 F_G .$aCc
* @version 1.0 F%P"T%|
*/ $7" Y/9Y
public class BubbleSort implements SortUtil.Sort{ 0nbY~j$A=
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/* (non-Javadoc) BMug7xl"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -^+fZBU;
*/ 0CO@@`~4
public void sort(int[] data) { 9HB+4q[
int temp; xpX<iT>5u
for(int i=0;i for(int j=data.length-1;j>i;j--){ u8.F_'` z
if(data[j] SortUtil.swap(data,j,j-1); _AzI\8m
} ,oykOda:|
} +-C.E
} bgLa`8
} FY<Q|Ov
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} ]"}BqS0
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选择排序: 7r&lW<:>
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package org.rut.util.algorithm.support; "}MP {/
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import org.rut.util.algorithm.SortUtil; 47N,jVt4
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/** ?r0rY?
* @author treeroot `WIZY33V
* @since 2006-2-2 , #=TputM
* @version 1.0 9#TD1B/
*/ @R%*; )*F
public class SelectionSort implements SortUtil.Sort { tn#cVB3
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/* 3Q'vVNFh<
* (non-Javadoc) /poGhB1k
* |.VSw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4GbfA
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*/
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public void sort(int[] data) { @Ddz|4 vEi
int temp; ( <YBvpt4>
for (int i = 0; i < data.length; i++) { EsGf+-}|!0
int lowIndex = i; 6R,Y.srR
for (int j = data.length - 1; j > i; j--) { fcxg6W'
if (data[j] < data[lowIndex]) { P0y DL:X[
lowIndex = j; ynv{
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} 3_<l`6^Ns/
} l]4=W<N
SortUtil.swap(data,i,lowIndex); !NH(EWER
} e8rZP(g&g
} <pfl>Uf
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} 9w- )??
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Shell排序: )by7[I0v
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package org.rut.util.algorithm.support; ~5'7u-;
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import org.rut.util.algorithm.SortUtil; -nXP<v=V
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/** V:w%5'^3
* @author treeroot +q'\rpt
* @since 2006-2-2 ?h6|N%U'
* @version 1.0 ulxfxfd
*/ WW+xU0
public class ShellSort implements SortUtil.Sort{ ("\{=XAQ
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/* (non-Javadoc) Ym1vq=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f[1cN`|z
*/ yAfwQ$Ll7
public void sort(int[] data) { tPQ|znB|
for(int i=data.length/2;i>2;i/=2){ r[4n2Mys
for(int j=0;j insertSort(data,j,i); pd:7K'yaw
} kV+^1@"
} Wk\(jaL%
insertSort(data,0,1); lhHH|~t0
} M#;
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/** +=jS!
* @param data ep=r7Mft
* @param j :~ pGHl
* @param i n74\{`8]o
*/ y92R}e\M
private void insertSort(int[] data, int start, int inc) { n9xP8<w8
int temp; ])wdd>'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @>HTbs6W
} AY{KxCrb^
} r5DRF4,7
} V_:`K$
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} `wXK&R<`
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快速排序: =}0Uw4ub(u
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package org.rut.util.algorithm.support; )[ A-d(y=
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import org.rut.util.algorithm.SortUtil; H"FK(N\
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/** r|EN 5
* @author treeroot R3~,&ab
* @since 2006-2-2 ^K;k4oK
* @version 1.0 sFc \L9 4
*/ . :Skc
public class QuickSort implements SortUtil.Sort{ RNi%6A1
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/* (non-Javadoc) -NXxxK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eAf i!!Z<
*/ @j^R+F
public void sort(int[] data) { Z1eT>6|]r
quickSort(data,0,data.length-1); c,4~zN8Ou
} -g@!\{
private void quickSort(int[] data,int i,int j){ tw_o?9
int pivotIndex=(i+j)/2; 7q+D}+ Xf
file://swap 1(gs({
SortUtil.swap(data,pivotIndex,j); T&lgWOls
'{"Rjv7
int k=partition(data,i-1,j,data[j]); YI g(^>sq
SortUtil.swap(data,k,j); cD0rU8x
if((k-i)>1) quickSort(data,i,k-1); XVqOiv)
if((j-k)>1) quickSort(data,k+1,j); nF@**,C Q
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} {V6&((E8
/** oZa'cZNs
* @param data 'OsZD?W{
* @param i 8M99cx*K
* @param j VHxBs
* @return 4rU/2}.q
*/ ( zWBrCX
private int partition(int[] data, int l, int r,int pivot) { Nap[=[rv
do{ vN Bg&m
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0~bUW V
SortUtil.swap(data,l,r); Wef%f]u
} pR61bl)
while(l SortUtil.swap(data,l,r); cLV*5?gVO
return l; i>YS%&O?
} F_Y]>,U
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} !;eE7xn &
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改进后的快速排序: F\ B/q
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package org.rut.util.algorithm.support; 8zp?WUb
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import org.rut.util.algorithm.SortUtil; DZSS
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/** 'z ?Hv
* @author treeroot 7*l$i/!
* @since 2006-2-2 z`zz8hK.
* @version 1.0 A7%d
*/ ;7'O=%
public class ImprovedQuickSort implements SortUtil.Sort { $Zu?Gd?
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private static int MAX_STACK_SIZE=4096; YzESVTh
private static int THRESHOLD=10; GbSCk}>
/* (non-Javadoc) P8eCaZg?(3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }bb,Iib
*/ ^%r6+ey
public void sort(int[] data) { lq-KM8j
int[] stack=new int[MAX_STACK_SIZE]; &t=:xVn-M
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int top=-1; 0P$1=oK
int pivot; ON,[!pc
int pivotIndex,l,r; Anz{u$0M[
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stack[++top]=0; DpRMXo[
stack[++top]=data.length-1; YnEyL2SuU
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while(top>0){ y
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int j=stack[top--]; 731Lz*IFg
int i=stack[top--]; @7Ec(]yp
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pivotIndex=(i+j)/2; t7f(%/] H0
pivot=data[pivotIndex]; > Vm}u`x
S%iK);
SortUtil.swap(data,pivotIndex,j); T#ls2UL*xh
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file://partition "`qk}n-
l=i-1; P~j#8cH7
r=j; e$[O J<t
do{ B4y_{V
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZC?~RXL(
SortUtil.swap(data,l,r); t<45[~[
} \n{#r`T
while(l SortUtil.swap(data,l,r); tm~9XFQ<
SortUtil.swap(data,l,j); 0>28o.
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if((l-i)>THRESHOLD){ $gl|^c\
stack[++top]=i; K2xB%m1LK
stack[++top]=l-1; LKM018H>
} JWNN5#=fQ
if((j-l)>THRESHOLD){ WZ'<iI
stack[++top]=l+1; Jh-yIk
stack[++top]=j; ~su>RolaX
} }>{R<[I!G
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} i]ZGq7YJ%
file://new InsertSort().sort(data); "S;4hO
insertSort(data); Cog }a
} 7nB4(A2[S4
/** b7sfr!t_d
* @param data W>jKWi,{
*/ HxO+JI`'3
private void insertSort(int[] data) { A?MM9Y}K
int temp; TAYh#T=S
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zz0er|9]Q
} zK6w0
} YuhfPa
} n*\o. :f
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} 1UMEbb
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归并排序: y6$a:6
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package org.rut.util.algorithm.support; -b!?9T?}
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import org.rut.util.algorithm.SortUtil; gt8dFcm|s
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/** e)}E&D;${
* @author treeroot [A~?V.G
* @since 2006-2-2 p*<Jg l
* @version 1.0 /we]i1-9
*/ -53c0g@X
public class MergeSort implements SortUtil.Sort{ dk7x<$h-h0
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/* (non-Javadoc) ;Rv WF )
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?=7k<a~
*/ }XUL\6 U
public void sort(int[] data) { wqG#jC!5
int[] temp=new int[data.length]; yy5|8L
mergeSort(data,temp,0,data.length-1); ]y#'U
} !$NK7-
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private void mergeSort(int[] data,int[] temp,int l,int r){ CzlG#?kU?2
int mid=(l+r)/2; &<><4MQ
if(l==r) return ; M[qhy.
mergeSort(data,temp,l,mid); ?b7ttlX{
mergeSort(data,temp,mid+1,r); {J"]tx9
]
for(int i=l;i<=r;i++){ ^|<>`i6
temp=data; 7)U
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} 3FvVM0l"
int i1=l; GbLHzw
int i2=mid+1; ^x0N]/
for(int cur=l;cur<=r;cur++){ E]Mx<7;\.
if(i1==mid+1) ICz:>4M-dn
data[cur]=temp[i2++]; `% \CO`
else if(i2>r) LGc8w>qE
data[cur]=temp[i1++]; ]\rQ{No
else if(temp[i1] data[cur]=temp[i1++]; ]EK(k7nH
else .c>6}:ye
data[cur]=temp[i2++]; mx)!] B"
} %oqKpD+
} Ko&4{}/
2|"D\N
} /[?}LrDO
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改进后的归并排序: +o@:8!IM1
r0nnmy]{d
package org.rut.util.algorithm.support; @q!T,({kx
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import org.rut.util.algorithm.SortUtil; .$s']' =
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/** C[fefV9g2
* @author treeroot 5BA:^4zr?
* @since 2006-2-2 F;_c x
* @version 1.0 9qDM0'WuU
*/ RR=WD -l
public class ImprovedMergeSort implements SortUtil.Sort { bj`GGxzOb
iuj%.}
private static final int THRESHOLD = 10; ]Sj;\Iz
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/* Zb_A(mnzh
* (non-Javadoc) 2c]751
* Ep(xlHTv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mxEe
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*/ .<vXj QE
public void sort(int[] data) { >-V632(/{o
int[] temp=new int[data.length]; ts<\n-f
mergeSort(data,temp,0,data.length-1); 9Tr ceL;
} Ytc[ kp
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private void mergeSort(int[] data, int[] temp, int l, int r) { \5tG>>c i
int i, j, k; 3XB`|\:
int mid = (l + r) / 2; t;Z9p7rk
if (l == r) k>i`G5Dh
return; HPu+ 4xQV
if ((mid - l) >= THRESHOLD) &~;M16XM,e
mergeSort(data, temp, l, mid); +-b'+mF
else Wtaz@+
insertSort(data, l, mid - l + 1); |11vm#
if ((r - mid) > THRESHOLD) ^>%.l'1/(
mergeSort(data, temp, mid + 1, r); I~6(>Z{
else rMVcoO@3
insertSort(data, mid + 1, r - mid); T-yEn&r4)
#yIHr&'oX
for (i = l; i <= mid; i++) { u ]y[g
temp = data; ^O<'Qp,[:
} ogSDV
for (j = 1; j <= r - mid; j++) { =p5]r:9W
temp[r - j + 1] = data[j + mid]; _"x%s
} 1.u^shc&|
int a = temp[l]; UUDbOxD^w
int b = temp[r]; f6J]=9jU
for (i = l, j = r, k = l; k <= r; k++) { /pkN=OBR
if (a < b) { _'mC*7+
data[k] = temp[i++]; tBkgn3w
a = temp; EZ>(}
} else { 0t7)x8c
data[k] = temp[j--]; N"<.v6Z
b = temp[j];
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} Id^q!4Th9
} S]=.p-Am
} S0OL;[*.
ZD]{HxGL!
/** fJ\?+,
* @param data ] 7[#K^
* @param l *.eeiSi{
* @param i E$z- |-{>
*/ cQxUEY('+
private void insertSort(int[] data, int start, int len) { ez9F!1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Py#EjF12
} #-Mr3
} Wm" q8-<<
} 8.jf6
} "6IZf>N@#
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堆排序: 0827z
CB-;Jqb
package org.rut.util.algorithm.support; m+8:_0x "
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import org.rut.util.algorithm.SortUtil; @i> r(X
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/** LN(\B:wAY
* @author treeroot W4av?H
* @since 2006-2-2 FZ%h7Oe
* @version 1.0 gnzg(Y]5w
*/ WJ-.?
public class HeapSort implements SortUtil.Sort{ AvZ5?rN$
Zgp9Uu}"
/* (non-Javadoc) a_/4 ^+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) doTbol?+
*/ &c"!Y)%G
public void sort(int[] data) { !4#qaH-Q
MaxHeap h=new MaxHeap(); &/Gn!J;1
h.init(data); )uAY_()/
for(int i=0;i h.remove(); DazoY&AWE
System.arraycopy(h.queue,1,data,0,data.length); X0+E!~X$zM
} XPf{R619
[?:MIl#!
private static class MaxHeap{ !_3b#Caf
x0%m}P/
void init(int[] data){ @1xVWSF
this.queue=new int[data.length+1]; #%ld~dgz-
for(int i=0;i queue[++size]=data; C7R3W,
fixUp(size); I6;6x
} yKrbGK*=_
} ID`C
fBZLWfp9
private int size=0; #?r|6<4X
ChUE,)
private int[] queue; \z2y?"\?
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public int get() { LHx ")H?,
return queue[1]; 2!}F+^8'P
} ,6MJW#~]
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public void remove() { 'MX|=K!C
SortUtil.swap(queue,1,size--); !%}n9vr!}\
fixDown(1); )M"NMUuU"
} @,= pG
file://fixdown ,J+L_S+B~
private void fixDown(int k) { 9XQE5^
int j; W+u,[_
while ((j = k << 1) <= size) { -0q|AB<
if (j < size %26amp;%26amp; queue[j] j++; N2 3:+u<)E
if (queue[k]>queue[j]) file://不用交换 V;R gO}
break; g i/k#3_m
SortUtil.swap(queue,j,k); Iv3yDL;
k = j; /kyO,g$9
} r)-{~JA!
} Jb$G
private void fixUp(int k) { 12L`Gi
while (k > 1) { qHgtd+
I
int j = k >> 1; ?mC'ZYQI
if (queue[j]>queue[k]) kmTYRl
)j
break; i)(G0/:
SortUtil.swap(queue,j,k); V.$tq
k = j; urkuG4cY
} &0[L2x}7
}
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} w (`g)`
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} *XWu) >*o
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SortUtil: #mUQ@X@K
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package org.rut.util.algorithm; 5Hj/7~ =
@+zWLq!1pB
import org.rut.util.algorithm.support.BubbleSort; W//+[
import org.rut.util.algorithm.support.HeapSort; hTO2+F*
import org.rut.util.algorithm.support.ImprovedMergeSort; Va.TUz4
import org.rut.util.algorithm.support.ImprovedQuickSort; NL
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import org.rut.util.algorithm.support.InsertSort; MUZ]*n&0
import org.rut.util.algorithm.support.MergeSort; >Ho=L)u
import org.rut.util.algorithm.support.QuickSort; RuVk>(?WK%
import org.rut.util.algorithm.support.SelectionSort; "8ZV%%elp
import org.rut.util.algorithm.support.ShellSort; [~|k;\2 +
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/** ZRc^}5}WA
* @author treeroot rxol7"2l
* @since 2006-2-2 s}Go")p<:
* @version 1.0 UMNNAX
*/ |Fze9kZO
public class SortUtil { 3}phg
public final static int INSERT = 1; ns5Dydo{T
public final static int BUBBLE = 2; D}}?{pe
public final static int SELECTION = 3; >*O5Ry:4
public final static int SHELL = 4; d)biMI}<5
public final static int QUICK = 5; rq7yNt
public final static int IMPROVED_QUICK = 6; kk<%VKC
public final static int MERGE = 7; qHe
H/e%`V
public final static int IMPROVED_MERGE = 8; '^WR5P<8c
public final static int HEAP = 9; (t5y$bc
}yrs6pQ
public static void sort(int[] data) { &