善良小松鼠

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2年10月17天

Leetcode[451] Sort Characters By Frequency Medium

Given a string, sort it in decreasing order based on the frequency of characters.Example 1:Input:“tree”Output:“eert”Explanation:‘e’ appears twice while ‘r’ and ‘t’ both appear once.So ‘e’ must...

apt-build 使用

环境:公司的arm设备1. 测试编译:apt-build build-source tree报错:cc1: error: unknown value ‘armv7’ for -mtunecc1: note: valid arguments are: cortex-a35 cortex-a53 cortex-a57 cortex-a72 cortex-a73 thunderx thunderxt88p1 thunderxt88 thunderxt81 thunderxt83 xgene1 falk