This a programing that text whether the character has already repeated or not

Repeated digit
..............\.DS_Store
__MACOSX
........\Repeated digit
........\..............\._.DS_Store
Repeated digit\Repeated digit
..............\..............\main.c
__MACOSX\Repeated digit\Repeated digit
........\..............\..............\._main.c
Repeated digit\Repeated digit\Repeated_digit.1
__MACOSX\Repeated digit\Repeated digit\._Repeated_digit.1
Repeated digit\Repeated digit.xcodeproj
..............\........................\project.pbxproj
..............\........................\project.xcworkspace
..............\........................\...................\contents.xcworkspacedata
..............\........................\...................\xcuserdata
..............\........................\...................\..........\chenlei.xcuserdatad
..............\........................\...................\..........\...................\UserInterfaceState.xcuserstate
..............\........................\xcuserdata
..............\........................\..........\chenlei.xcuserdatad
..............\........................\..........\...................\xcschemes
..............\........................\..........\...................\.........\Repeated digit.xcscheme
..............\........................\..........\...................\.........\xcschememanagement.plist

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