If I had an array that looks like : 'A\t2\nB\t5\nC\t6\nB\t2\n' <- alphabet and numbers are separated by a tab(\t) and a new line(\n) after the number.If I had an array that looks like : 'A\t2\nB\t5
阅读背景：
在数组中收集相同的单词，C
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