dic.getOrDefault
时间: 2024-02-22 22:24:21 浏览: 16
dic.getOrDefault(s.charAt(j), -1)的作用是获取哈希表dic中键为s.charAt(j)的值。如果dic中存在该键,则返回对应的值;如果dic中不存在该键,则返回默认值-1。 <span class="em">1</span><span class="em">2</span><span class="em">3</span>
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