大家好:
我手邊有一個檔案 input.txt 如下
the 77 survey: 77 out of 100 people will not pick the number 1 as the first choice.
A stitch in time saves 9 but only if you have exactly 9.
52 trombones were in 5 marching bands in the big parade of 52 and 52 people attended.
要取出每行的數字,去除重複的數字,並相加
77+100+1+9+52+5= 274
我已經把每行的數字取到陣列中,可是我不知道刪掉重複的數字
有想過用hash,可我怎麼寫都寫不出來,請大家給我一點提示
謝謝
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