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[JAVA]用Java实现的各种排序

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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。 j!"5, ~  
插入排序: +1^L35\@  
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package org.rut.util.algorithm.support;  v> s,*  
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import org.rut.util.algorithm.SortUtil; |>b;M ,`OO  
/** +zK?1llt  
* @author treeroot EY0,Q {  
* @since 2006-2-2 K/_"ybR7  
* @version 1.0 3|%058bF  
*/ a7aj:.wi  
public class InsertSort implements SortUtil.Sort{ "JE->iD  
K5F;/ KR"  
/* (non-Javadoc) ^ywDa^;-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'n}]  
*/ 6?a z  
public void sort(int[] data) { Zr(eH2}0D  
int temp; eQ*zi9na  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "q KVGd  
} rDGrq9  
} @sUec  
} v6ei47-  
^].U?t.n)  
} F<b/)<Bm=  
Rh%@N.Z*  
冒泡排序: *y', eB  
}*S`1IWMj  
package org.rut.util.algorithm.support; S~)_=4Z  
j /@<=  
import org.rut.util.algorithm.SortUtil; (gIFuOGi>  
;*hVAxs1  
/** _{n4jdw%(  
* @author treeroot ^oR qu  
* @since 2006-2-2 4'td6F  
* @version 1.0 Awr(}){  
*/ + Y!:@d  
public class BubbleSort implements SortUtil.Sort{ aq\Fh7  
ibLx'<  
/* (non-Javadoc) o#>Mf464I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /x<uv_"  
*/ F$i 6  
public void sort(int[] data) { 39I|.B"  
int temp; +U4';[LG1C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ G @EEh.s9  
if(data[j] SortUtil.swap(data,j,j-1); AR{$P6u!%|  
} O* lE0~rJ  
} >M0^R} v  
} pu_?) U  
} KGc!#C  
cj[x%eK>  
}  smn~p/u  
>!%+9@a}  
选择排序: B>c2 *+Bk  
Q(O0z3b  
package org.rut.util.algorithm.support; +VL:O]`DJ  
)l.AsfW%  
import org.rut.util.algorithm.SortUtil; .m.Ga|;  
wc-v]$DW  
/** Ai)>ot  
* @author treeroot (EjlnG}5l  
* @since 2006-2-2 -2'+GO7G  
* @version 1.0 "H=N>=g0E  
*/ ^XG$?2<U  
public class SelectionSort implements SortUtil.Sort { 8l'W[6  
PXML1.r$Q  
/* Q pIec\a+  
* (non-Javadoc) +hX =  
* rjj_]1?K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |kD69 }sG  
*/ |nm}E_  
public void sort(int[] data) { (xKypc+j  
int temp; Wf-XH|j[  
for (int i = 0; i < data.length; i++) { %V#MUi1  
int lowIndex = i; XN{WxcZ  
for (int j = data.length - 1; j > i; j--) { s3  fQGbU  
if (data[j] < data[lowIndex]) { YT,yRV9#  
lowIndex = j; !yr4B "kz  
} 0|C !n+OK  
} fs-LaV 0  
SortUtil.swap(data,i,lowIndex); #l@P}sHXq  
} 'z{|#zd9  
} YV} "#  
r4<As`&  
} EPR85[k  
Q [C26U  
Shell排序: $$EEhy  
|'I>Ojm  
package org.rut.util.algorithm.support; hwA&SS  
KP 6vb@(6  
import org.rut.util.algorithm.SortUtil; |Y?<58[!)  
5<Uh2c  
/** y#8 W1%{x  
* @author treeroot Zz+v3o0  
* @since 2006-2-2 U| ?68B3  
* @version 1.0 TY5R=jh=  
*/ *e<}hm Dr  
public class ShellSort implements SortUtil.Sort{ Uq`6VpZ  
^Wn+G8n  
/* (non-Javadoc) jatlv/,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #)@#Qd  
*/  \S1W,H|  
public void sort(int[] data) { sKJr34  
for(int i=data.length/2;i>2;i/=2){ $M/1pZ  
for(int j=0;j insertSort(data,j,i); wLb:FB2  
} s= 5 k7  
} dQ _4aO  
insertSort(data,0,1); fE_%,DJE(  
} `& '{R<cL  
#9 Fk&Lx  
/** iX<" \pV  
* @param data g$zGiqzMK  
* @param j H=w):kL|  
* @param i cd=|P?B i  
*/ q'4P/2)va  
private void insertSort(int[] data, int start, int inc) { cP\z*\dS  
int temp; !Q5,Zhgr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ew~?&=  
} b)M- q{  
} B}.:7,/0  
} }fv7WhQ  
>`/s+V  
} A?$-Uqb"  
Dsn=fht  
快速排序: m*CW3y{n)  
}0Uh<v@  
package org.rut.util.algorithm.support; /8nUecr  
DVMdRfA  
import org.rut.util.algorithm.SortUtil; /xcXd+k]  
6\jbSe  
/** <m\<yZ2aa  
* @author treeroot jSH.e?  
* @since 2006-2-2 nRu %0Op  
* @version 1.0  +a%D+  
*/ e|5@7~Vi  
public class QuickSort implements SortUtil.Sort{ I/!AjB8W4  
-iY-rzW  
/* (non-Javadoc) J/:U,01  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N ~fE&@-  
*/ V5i}^%QSs  
public void sort(int[] data) { kFY2VPP~  
quickSort(data,0,data.length-1); ?1c7wEk  
} </@5>hx/  
private void quickSort(int[] data,int i,int j){ x DN u'  
int pivotIndex=(i+j)/2; 43-Bx`6\  
file://swap @YQ*a4`  
SortUtil.swap(data,pivotIndex,j); HFTeG4R  
/#SfgcDt  
int k=partition(data,i-1,j,data[j]); 9_F&G('V{a  
SortUtil.swap(data,k,j); ]7>#YKH.  
if((k-i)>1) quickSort(data,i,k-1); []aw;\7}Y  
if((j-k)>1) quickSort(data,k+1,j); %<+uJ'pj  
BfCnyL%  
} _`O",Ff  
/** Q4L=]qc T  
* @param data QBH|pr  
* @param i -mGG:#yP  
* @param j 'DNxc  
* @return IVZUB*wv)b  
*/ >)='.aR<  
private int partition(int[] data, int l, int r,int pivot) { <8Tp]1z  
do{ TwVkI<e0s?  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e`H>}O/ai  
SortUtil.swap(data,l,r); O[eU{ ;P  
} 0Zp5y@ V8  
while(l SortUtil.swap(data,l,r); US3)+6  
return l; o|vL:| 8Q  
} l&qyLL2 w  
ujkWVE'  
} _b>{:H&\  
/W-ges  
改进后的快速排序: j~V $q/7S  
RticGQy&5  
package org.rut.util.algorithm.support; 5h^BXX|Y*  
K(lSR  
import org.rut.util.algorithm.SortUtil; O cPgw/ I  
AXte&l=M  
/** &A.0(s  
* @author treeroot lMh>eX  
* @since 2006-2-2 wIR"!C>LE  
* @version 1.0  f+ !J1  
*/ Y?7GFkIP$  
public class ImprovedQuickSort implements SortUtil.Sort { OFmHj]I7=  
r|*_KQq  
private static int MAX_STACK_SIZE=4096; 9` UbsxFl  
private static int THRESHOLD=10; Z<^EZX3N  
/* (non-Javadoc) [7~AWZU3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n1JV)4Mv  
*/ 3 yb]d5:U  
public void sort(int[] data) { ZzTkEz >  
int[] stack=new int[MAX_STACK_SIZE]; zh0T3U0D  
+Ek1~i.  
int top=-1; 9W]OtSG  
int pivot; 1n}#54  
int pivotIndex,l,r; ti6X=@ P:  
koS?UYF`  
stack[++top]=0; )u28:+8  
stack[++top]=data.length-1; &4}=@'G@  
@Lf&[_  
while(top>0){ >`a^E1)  
int j=stack[top--]; ^'M^0'_"v  
int i=stack[top--]; X$1YvYsID  
~|Ln9f-g  
pivotIndex=(i+j)/2; fe`_0lxj  
pivot=data[pivotIndex]; pjTJZhT2I  
w xte  
SortUtil.swap(data,pivotIndex,j); 7B\NP`l  
<%% )C>l  
file://partition Qk>U=]U  
l=i-1; !X$19"  
r=j; 4%8den,|  
do{ .I_<\h7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5p}j{f  
SortUtil.swap(data,l,r); 4k3pm&  
} $oM>?h_ =  
while(l SortUtil.swap(data,l,r); 1L'Q;?&2H,  
SortUtil.swap(data,l,j); U9^1 A*  
\xl$z *zI  
if((l-i)>THRESHOLD){ B0)|sH  
stack[++top]=i; 3)#Nc|  
stack[++top]=l-1; #}@8(>T  
} 8q{|nH  
if((j-l)>THRESHOLD){ L[ D+=  
stack[++top]=l+1; P7,g^:$  
stack[++top]=j; 4@Db $PHs  
} U*\K<fw   
WwZ3hd  
} s$fX ;  
file://new InsertSort().sort(data); Ai[@2AyU  
insertSort(data); na~ FT[3 C  
} y9/nkF1p  
/** jVN06,3z  
* @param data @MTv4eC}e  
*/ P*7G?  
private void insertSort(int[] data) { Pp8G2|bz  
int temp; z_R^C%0k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nh@JGy*L  
} Gds(.]_  
} ,lvG5B\0  
} :2==7u7v?  
uQx/o ^  
} B|"i`{>  
i.Y2]1  
归并排序: hF@%k ;I  
zng.(]U/?H  
package org.rut.util.algorithm.support; aZ_3@I{d`  
aN0 7\  
import org.rut.util.algorithm.SortUtil; V,Nu!$)J  
u<fZ.1  
/** > K,QP<B  
* @author treeroot ^W:a7cMw  
* @since 2006-2-2 M@h"FuX:  
* @version 1.0 :n{{\SSIgX  
*/ ~M H ^R1=]  
public class MergeSort implements SortUtil.Sort{ L8h!%56s  
^zO{Aks  
/* (non-Javadoc) 'fb\t,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9U.Ctx:F  
*/ !i (V.A  
public void sort(int[] data) { fi*b]a\'  
int[] temp=new int[data.length]; $6*Yh-"g  
mergeSort(data,temp,0,data.length-1); "p;tj74O9  
} u*=^>LD  
e CN:  
private void mergeSort(int[] data,int[] temp,int l,int r){ M$@~|pQ<  
int mid=(l+r)/2; )LKJfoo PY  
if(l==r) return ; cf"&22TQ+Z  
mergeSort(data,temp,l,mid); a$Ud"  
mergeSort(data,temp,mid+1,r); ?K:\WW  
for(int i=l;i<=r;i++){ 0ElEaH1z  
temp=data; yUo8-OaL7  
} G93V=Bk=  
int i1=l; YQHpW>z  
int i2=mid+1; a5 ZXrWv  
for(int cur=l;cur<=r;cur++){ ?uL-qsU  
if(i1==mid+1) H.;}%id  
data[cur]=temp[i2++]; Q[NoFZ V!  
else if(i2>r) ~>9G\/u j  
data[cur]=temp[i1++]; bK0(c1*a[e  
else if(temp[i1] data[cur]=temp[i1++]; jR[c3EA ;  
else &a=rJvnIO&  
data[cur]=temp[i2++]; 25vjn 1$sW  
} (T pnJq  
} w8Z#]kRv  
"PRHQW  
} 8M,o)oH  
Q0jg(=9wP  
改进后的归并排序: obF|;fwPnR  
71AYDO  
package org.rut.util.algorithm.support; M_%KhK  
uk$MQ v*D  
import org.rut.util.algorithm.SortUtil; H3R{+7  
l]wLQqoO  
/** `Rt w'Uz  
* @author treeroot F4T!&E%6  
* @since 2006-2-2 N]/cBGy  
* @version 1.0 FqbGT(QB0  
*/ srN7  
public class ImprovedMergeSort implements SortUtil.Sort { 8g_kZ^<[  
^8 ,prxaok  
private static final int THRESHOLD = 10; %au>D  
LFi* O&  
/* ;DnUeE8  
* (non-Javadoc) vI(LIfe;  
* }2RbX,0l9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E+XS7':I  
*/ &gS-.{w "  
public void sort(int[] data) { N.z2eo  
int[] temp=new int[data.length]; l"dXL"h  
mergeSort(data,temp,0,data.length-1); mCg^Y)Q  
} ,@;|+C  
j~ds)dW%`&  
private void mergeSort(int[] data, int[] temp, int l, int r) { GEVDXx>@  
int i, j, k; 'do2n/  
int mid = (l + r) / 2; r`Fs"n#^-4  
if (l == r) z;9D[ME#1  
return; o*7NyiJ@z  
if ((mid - l) >= THRESHOLD) 6U8esPs,  
mergeSort(data, temp, l, mid); sj/k';#g  
else Jv3G\9_  
insertSort(data, l, mid - l + 1); Gchs$^1`t  
if ((r - mid) > THRESHOLD) ;Krs*3 s  
mergeSort(data, temp, mid + 1, r); qP;1LAX  
else RZ{O6~VH  
insertSort(data, mid + 1, r - mid); Lks+FW  
v07A3oj  
for (i = l; i <= mid; i++) { %2I>-0]B  
temp = data; af @a /  
} p>?(u GV  
for (j = 1; j <= r - mid; j++) { JK!`uG+v  
temp[r - j + 1] = data[j + mid]; J?Y,3cc.  
} fP4P'eI  
int a = temp[l]; `.~S/$a.&  
int b = temp[r]; P(@Q[XQ2  
for (i = l, j = r, k = l; k <= r; k++) { N& F.hi$_  
if (a < b) { \ Qx%7 6  
data[k] = temp[i++]; {#?|&n<  
a = temp; aiz ws[C  
} else { %?+Lkj&  
data[k] = temp[j--]; ! a\v)R  
b = temp[j]; (c}!gjm  
} yLCMu | +  
} X0j>g^b8  
} W(ryL_#;  
,jz~Np_2  
/** ~V?z!3r-)  
* @param data ]CcRI|g}  
* @param l _\k?uUo&,^  
* @param i ;! ?l8R  
*/ 85dC6wI4K  
private void insertSort(int[] data, int start, int len) { Q -$) H;,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^.@%n1I"5y  
} MRo_An+  
} j`@`M*)GB  
} q!U$\Q&  
} .UX4p =  
kUGFg{"  
堆排序: GL9'dL|  
d#d&CJAfr  
package org.rut.util.algorithm.support; lcpiCZ  
2o[ceEg  
import org.rut.util.algorithm.SortUtil; gx^!&>eIb#  
w]h8KNt  
/** &J9 + 5L8  
* @author treeroot 32aI0CT  
* @since 2006-2-2 Xe: ^<$z  
* @version 1.0 !9r%d8!z  
*/ abS~'r14  
public class HeapSort implements SortUtil.Sort{ q6E 'W" Q  
,:K{  
/* (non-Javadoc) :'q$emtY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SFwY%2np)!  
*/ 0'A"]6  
public void sort(int[] data) { |[#Qk 4Ttf  
MaxHeap h=new MaxHeap(); %o\+R0K  
h.init(data); [+A]E,pv]1  
for(int i=0;i h.remove(); 9vDOSwU*  
System.arraycopy(h.queue,1,data,0,data.length); m0.g}N-w  
} }zkFl{/u  
`mD!z.`U  
private static class MaxHeap{ :F[s  
J_yXL7d  
void init(int[] data){ `w4'DB-R)  
this.queue=new int[data.length+1]; U8>4ClJ4  
for(int i=0;i queue[++size]=data; K9}Brhe  
fixUp(size); vAop#V  
} AH'3 5Kf)  
} 0x*|X@ 6\  
o>+mw|{  
private int size=0; FY)]yz  
3]}RjOTU  
private int[] queue; M?('VOy)  
.C+(E@eyA  
public int get() { P =Q+VIP&  
return queue[1]; 4DL2 A;T  
} /|&4&$  
>tMI%r  
public void remove() { <9xr? i=  
SortUtil.swap(queue,1,size--); {!? M!/d  
fixDown(1); dSTyx#o  
} ~9k E.  
file://fixdown ^  ~1QA  
private void fixDown(int k) { |XNw&X1VF  
int j; ui`EODhA(  
while ((j = k << 1) <= size) { "D4% A!i  
if (j < size %26amp;%26amp; queue[j] j++; (s|WmSQ  
if (queue[k]>queue[j]) file://不用交换 oy[ px9Wx  
break; 16@<G  
SortUtil.swap(queue,j,k); F+BCzsm7$  
k = j; GZx*A S]+  
} :YkAp9civ  
} {=&( { cS  
private void fixUp(int k) { uxKO"  
while (k > 1) { Z'5&N5hx  
int j = k >> 1; s7:_!Nd@8  
if (queue[j]>queue[k]) vy={ziJ  
break; "u$XEA  
SortUtil.swap(queue,j,k); /D|q-`*K  
k = j; s]A8C^;c  
} ;[P>  
} 5f0g7w =-  
#M#$2Vt  
} x)$0Nr62D  
:p)^+AF"5  
} M5:*aCN6P  
jVoD9H F/  
SortUtil: T?Z^2.Pvc  
\C>vj+!cJ  
package org.rut.util.algorithm; j}tGcFwvSN  
hc0$mit  
import org.rut.util.algorithm.support.BubbleSort; #E\6:UnT  
import org.rut.util.algorithm.support.HeapSort; %8Y+Df;ax  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5{DwD{Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; -U_,RMw~  
import org.rut.util.algorithm.support.InsertSort; ~g#/q~UE  
import org.rut.util.algorithm.support.MergeSort; suWO:]FR  
import org.rut.util.algorithm.support.QuickSort; fY78  
import org.rut.util.algorithm.support.SelectionSort; <:nyRy}  
import org.rut.util.algorithm.support.ShellSort; HFyQ$pbBU  
!OPHS^L  
/** %yfl-c(u  
* @author treeroot .qYQ3G'V  
* @since 2006-2-2 !:esdJH  
* @version 1.0 L0=`1q  
*/ LLzxCMc9*  
public class SortUtil { UpSJ%%.n  
public final static int INSERT = 1; !5[SNr3^  
public final static int BUBBLE = 2; *M#L)c;6  
public final static int SELECTION = 3; 6;!)^b  
public final static int SHELL = 4; #s>'IPc0  
public final static int QUICK = 5; o.zP1n|G~r  
public final static int IMPROVED_QUICK = 6; 4!96k~d}  
public final static int MERGE = 7; [,ulz4"  
public final static int IMPROVED_MERGE = 8; ;+o6"ky5  
public final static int HEAP = 9; /<+`4n  
cAVdH{$"  
public static void sort(int[] data) { lMg#zT!?  
sort(data, IMPROVED_QUICK); $txF|Fj]^A  
} uz$p'Q  
private static String[] name={ ^k^?>h  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~h=iZ/g_^_  
}; DC BN89#  
'q}f3u>  
private static Sort[] impl=new Sort[]{ vE#8&Zq  
new InsertSort(), XUUP#<,s  
new BubbleSort(), BjTgZ98J  
new SelectionSort(), 8~RJnwF^  
new ShellSort(), H*f2fyC1\  
new QuickSort(), /e|qyWs  
new ImprovedQuickSort(), 4 540Lw'A  
new MergeSort(), ${wp}<u_  
new ImprovedMergeSort(), =_@) KWeX$  
new HeapSort() ug;\`.nT^  
}; ){eQ.yW  
L=HnVgBs  
public static String toString(int algorithm){ x`IWo:j  
return name[algorithm-1]; 5~2_wWjX  
} g$hEVT  
mtE+}b@(!&  
public static void sort(int[] data, int algorithm) { yFd94 2  
impl[algorithm-1].sort(data); v Lq%k+D#  
} SlT>S1`rnG  
Wy-y-wi:p  
public static interface Sort { ;<b7kepR  
public void sort(int[] data); C#)T$wl[E  
} ~MYE8xrId  
o"A)t=  
public static void swap(int[] data, int i, int j) { Q^05n$ tI  
int temp = data; BYa#<jXtAT  
data = data[j]; a +~b3  
data[j] = temp; $o$WFV+h  
} /<k 5"C% z  
} %Kp^wf#o9  
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3+5=?,请输入中文答案:八 正确答案:八